Restoration Ecology最新文献_第6页

Ecosystem restoration coupled with poverty alleviation in eThekwini Municipality, KwaZulu‐Natal Province, South Africa 南非夸祖鲁-纳塔尔省 eThekwini 市的生态系统恢复与减贫相结合

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-07-08 DOI: 10.1111/rec.14224

Beka J. Nxele, Petrus J. Pieterse, Diane L. Larson

{"title":"Ecosystem restoration coupled with poverty alleviation in eThekwini Municipality, KwaZulu‐Natal Province, South Africa","authors":"Beka J. Nxele, Petrus J. Pieterse, Diane L. Larson","doi":"10.1111/rec.14224","DOIUrl":"https://doi.org/10.1111/rec.14224","url":null,"abstract":"Ecosystem restoration is a necessity for addressing socio‐ecological challenges by improving ecosystem resilience and alleviating poverty through local community involvement. Here, we review a community‐based, large‐scale ecosystem restoration program, Working for Ecosystems, implemented by eThekwini Municipality in KwaZulu‐Natal, South Africa, between 2007 and 2022. For this study, we interrogated monthly and annual reports generated by the program between 2011 and 2021 to describe how the program worked to suppress invasive alien plants (IAPs) and provided employment opportunities to marginalized groups (women, youth, military veterans, and people living with disabilities). Annual budget was positively correlated with the area cleared of IAPs and effort (person‐days in the field). The program successfully incorporated marginalized groups, but military veterans and people living with disabilities remained in smaller numbers and were not well quantified. Participants were encouraged to constitute companies—Small, Medium, and Micro Enterprises—that were then subcontracted to the program or could progress to other endeavors, allowing other community members to enter the program. A steady increase in the implementation budget emphasized the need for a long‐term plan to ensure accountability and sustainability of restoration and socio‐ecological systems.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"17 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141577813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seed dormancy, germination requirements, and implications of herbicides for Penstemon albidus and P. nitidus 种子休眠、发芽要求以及除草剂对白茎槟榔和硝茎槟榔的影响

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-07-05 DOI: 10.1111/rec.14228

Gregory A. Cooper, Gabrielle A. Bolwerk, A. Joshua Leffler, Lora B. Perkins

{"title":"Seed dormancy, germination requirements, and implications of herbicides for Penstemon albidus and P. nitidus","authors":"Gregory A. Cooper, Gabrielle A. Bolwerk, A. Joshua Leffler, Lora B. Perkins","doi":"10.1111/rec.14228","DOIUrl":"https://doi.org/10.1111/rec.14228","url":null,"abstract":"Seed‐based restoration is dependent on seed germination, and poor germination can cause restoration failure. Many restoration failures can be attributed to a lack of knowledge of germination characteristics, species‐specific seed dormancy, or the effects of widely used herbicides on germination. White penstemon (Penstemon albidus) and Waxleaf penstemon (P. nitidus) are native to the Northern Great Plains region of North America, and increased germination of these species would contribute to improved restoration in the region. We performed two concurrent experiments to determine: (1) the germination requirements and dormancy class of these species; and (2) the effects of herbicides on germination. To determine germination requirements, we applied pretreatments (scarification, smoke, and KNO3) and three durations (2, 4, and 8 weeks) of cold and warm stratification. To test the effects of herbicides on germination, three commonly used herbicides (atrazine, trifluralin, and 2,4‐D) were applied at six concentrations (100, 50, 10, 1, 0.1, and 0% of the recommended field application rate). Germination characteristics indicate both species express physiological dormancy. Physiological dormancy denotes an embryo with low growth potential that is unable to overcome mechanical constraints but can be alleviated with proper temperature cues. Both species required cold stratification, with P. nitidus needing a longer period (8 weeks) than P. albidus (4 weeks). Final germination percentage of P. albidus decreased with higher doses of 2,4‐D but was not affected by atrazine or trifluralin. These experiments help to create protocol for the use of our study species, as well as other species, in restoration plantings.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"6 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of water delivery and irrigation for riparian restoration in the Colorado River Delta, Mexico 输水和灌溉对墨西哥科罗拉多河三角洲河岸恢复的影响

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-07-04 DOI: 10.1111/rec.14226

Pamela L. Nagler, Ibrahima Sall, Martha M. Gómez‐Sapiens, Karl W. Flessa, Armando Barreto‐Muñoz, Kamel Didan

{"title":"Effect of water delivery and irrigation for riparian restoration in the Colorado River Delta, Mexico","authors":"Pamela L. Nagler, Ibrahima Sall, Martha M. Gómez‐Sapiens, Karl W. Flessa, Armando Barreto‐Muñoz, Kamel Didan","doi":"10.1111/rec.14226","DOIUrl":"https://doi.org/10.1111/rec.14226","url":null,"abstract":"Along Mexico's arid Colorado River Delta, the riparian corridor lacks water due to a reduction in frequent flows, climate change, human infrastructure, and altered riparian landcover from disturbances to invasive species, fire, and high soil and water salinities, which have led to declines in riparian plant health in recent decades. Restoration efforts focusing on small plots have successfully revitalized habitat, which is the motivation for this research. Accurate estimations of water use by riparian vegetation are crucial in arid environments, where measuring actual evapotranspiration (ETa) poses a significant challenge in these narrow corridors. This study utilizes field‐validated remote sensing techniques to quantify ETa at restoration sites. Our methods are twofold; we use the Landsat‐8 two‐band Enhanced Vegetation Index (EVI2) to monitor changes in vegetation greenness—a proxy of plant health—and we integrate EVI2 with potential evapotranspiration (ET) to calculate ETa. Our findings reveal a notable increase in vegetation greenness within the restoration sites over 9 years, with an average increase of 41.3%. Conversely, greenness in adjacent, unrestored control areas declined by 27.3%. The study also indicates a 22.1% increase in ETa in the restored areas, compared to a 30.8% reduction in the unrestored regions. Restored sites in reach 4 experienced ETa increases ranging from 9.2 to 12.2%, whereas their unrestored counterparts show a decline of 21.4%. Valuable estimates are provided of riparian greenness and water use that may assist natural resource managers who are tasked with allocating water and managing habitats within similar riparian corridors.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"18 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying herbicides compatible with biological soil crusts for land management: effects differ by mechanistic family 为土地管理确定与生物土壤结壳兼容的除草剂：效果因机理系列而异

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-07-04 DOI: 10.1111/rec.14227

Lydia N. Bailey, Anita Antoninka, Lara Kobelt, Boris Poff, Matthew A. Bowker

{"title":"Identifying herbicides compatible with biological soil crusts for land management: effects differ by mechanistic family","authors":"Lydia N. Bailey, Anita Antoninka, Lara Kobelt, Boris Poff, Matthew A. Bowker","doi":"10.1111/rec.14227","DOIUrl":"https://doi.org/10.1111/rec.14227","url":null,"abstract":"Dryland degradation is a global problem, destabilizing ecosystems and disrupting coupled human‐natural systems in arid regions. Degradation, caused by livestock grazing, wildfire, vehicles, construction, climate perturbances, and other surface disturbances, open space for invasive plants to establish while damaging soils, biological soil crusts (biocrusts), and vascular plant communities. Due to the scale of invasive plant infestations and the cost of mechanical control, invasive plants are commonly treated with herbicides, but little is known about the consequences of herbicides on biocrust. Biocrusts are communities of biota that aggregate the soil surface and provide ecosystem services, including mitigating soil erosion and fixing nitrogen, making biocrust a promising and emerging tool to counteract degradation. To test biocrust compatibility with standard herbicide treatments, we conducted a organisms (mosses and the lichens Placidium/Clavascidium and Enchylium). We found that response varied based on the herbicide mechanistic family, with the magnitude of response varying for biocrust organisms. Mosses treated with amino acid disrupters (glyphosate and imazapic) had 65–75% less health tissue area than controls after 3 months. Surprisingly, mosses treated with synthetic auxins (2,4‐D and aminopyralid) had a similar or slightly greater healthy area. Blue dye and surfactants had no effect on any tested biocrust organism. This greenhouse study suggests that through careful selection of herbicides, biocrust restoration could be simultaneously used with herbicide treatments of invasive plants to improve soil health.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"86 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wetland restoration: can short‐term success criteria predict long‐term outcomes? 湿地恢复：短期成功标准能否预测长期结果？

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-07-04 DOI: 10.1111/rec.14231

Mathias Adam, David J. Cooper, Renaud Jaunatre, Jean‐Christophe Clément, Stephanie Gaucherand

{"title":"Wetland restoration: can short‐term success criteria predict long‐term outcomes?","authors":"Mathias Adam, David J. Cooper, Renaud Jaunatre, Jean‐Christophe Clément, Stephanie Gaucherand","doi":"10.1111/rec.14231","DOIUrl":"https://doi.org/10.1111/rec.14231","url":null,"abstract":"Worldwide wetland loss over the past 50 years has made wetland conservation a public policy priority, leading to an increase in wetland restoration programs. However, predicting long‐term restoration outcomes remains difficult. The monitoring of these programs rarely exceeds 5–10 years, forcing wetland managers to rely on short‐term success criteria that may be criticized by the scientific community. Our objective was to assess the significance of four short‐term success criteria (Carex ssp. shoot density, Salix ssp. survival, invasive species cover, and hydrologic dissimilarity to reference sites) used in a restoration program of 12 wetlands monitored for 5 years post‐restoration in predicting restoration outcomes 15 years post‐restoration. We defined the success of restoration efforts after 15 years using a cluster analysis‐based approach, and the clusters were described using principal coordinate analysis and Tukey's post hoc honest significant difference test. Finally, we assessed the pertinence of each short‐term success criteria in predicting long‐term restoration outcomes using Pearson correlation tests and spatial regressive models. Our results demonstrate that stress‐based short‐term success criteria can be reliable predictors of longer‐term success for communities with shallow water tables, whereas target‐species‐based short‐term success criteria are not. Hydrologic dissimilarity to the reference site was appropriate for willow‐sedge community outcome predictions, while invasive species cover was best for sedge community outcome predictions. For communities in drier habitats, such as the willow‐herb community, none of the tested short‐term success criteria were significant predictors of long‐term restoration outcomes, and further research is required to identify suitable short‐term success criteria.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"39 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141550234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can multi‐species plantings alleviate abiotic stressors to enhance Bald cypress restoration? 多树种种植能否减轻非生物压力，从而加强秃头柏的恢复？

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-06-28 DOI: 10.1111/rec.14215

Victoria S. Ellis, Taylor M. Sloey

{"title":"Can multi‐species plantings alleviate abiotic stressors to enhance Bald cypress restoration?","authors":"Victoria S. Ellis, Taylor M. Sloey","doi":"10.1111/rec.14215","DOIUrl":"https://doi.org/10.1111/rec.14215","url":null,"abstract":"Restoration researchers and practitioners alike advocate for novel restoration approaches, informed by ecological theories and principles, to enhance the likelihood of meeting restoration goals. Forested wetland restoration has historically focused on creating abiotic conditions that support the tolerance thresholds of desired species, but the stress gradient hypothesis provides guidance for potential new strategies that use biotic interactions to ameliorate stressful abiotic conditions. In this study, we tested whether multi‐species planting approaches can be used to enhance the survival and growth of a target restoration tree species, Bald cypress, along multiple abiotic gradients. We conducted a fully factorial controlled greenhouse experiment which manipulated above‐ and belowground interactions between two species (Bald cypress and Soft rush), as well as light availability and depth of inundation. Our findings showed that co‐planting Bald cypress seedlings with Soft rush did not increase tree biomass production or growth metrics (e.g. stem height and leaf area) under any exposed stress combination. Importantly, we found that full‐sun irradiance negatively impacted functional traits associated with the tree seedlings' health and ability to photosynthesize. Our findings are important for consideration by practitioners as light is rarely the focus of wetland ecosystem restoration and degraded forested wetlands or restoration sites often have open canopies.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"133 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deer exclusion is necessary to promote post‐fire herbaceous regeneration in the understorey of a Mediterranean forest 为促进地中海森林林下草本植物的火后再生，有必要驱赶鹿群

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-06-27 DOI: 10.1111/rec.14208

Andreu Cera, Miguel N. Bugalho, Filipe X. Catry

{"title":"Deer exclusion is necessary to promote post‐fire herbaceous regeneration in the understorey of a Mediterranean forest","authors":"Andreu Cera, Miguel N. Bugalho, Filipe X. Catry","doi":"10.1111/rec.14208","DOIUrl":"https://doi.org/10.1111/rec.14208","url":null,"abstract":"The frequency of severe wildfires is on the rise in the Mediterranean Basin as a result of climate change and land abandonment. Recurrent wildfires may retard or impede ecosystem recovery, frequently requiring the implementation of restoration practices. In that context, a post‐fire deer exclusion experiment was conducted in a Mediterranean mixed forest ecosystem with high population densities of deer species (Fallow deer and Red deer). A deer exclusion area was established as a form of restoration intervention to promote post‐fire vegetation recovery. We surveyed plant species during the second and third springs after fire in both deer‐excluded and deer‐allowed areas in order to detect changes in the community. We analyzed the plant species composition, species diversity, and structure of herbaceous and woody plant communities. We also compared the frequency of annual and perennial herb species, functional groups, and post‐fire plant regeneration strategies. The main differences were due to differences between springs rather than of deer‐excluded and deer‐allowed plots. Deer consumed both woody and herbaceous species, favoring the assemblage of herbaceous over woody species. Deer favored the establishment of annual forbs, including unpalatable and/or exotic species, while limiting the abundance of graminoids. Observed deer impacts could have been magnified during the second spring by a drought. Our study demonstrates that deer exclusion can be an effective restoration practice for promoting post‐fire herbaceous regeneration in forests with significant densities of wild ungulates, although seasonal effects may override restoration practice effects.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"30 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nontarget effects of herbicides on annual forbs and seeded grass in the Great Basin, United States, are partially offset by planting depth and application rate 除草剂对美国大盆地一年生草本植物和播种草的非目标效应被种植深度和施药量部分抵消

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-06-26 DOI: 10.1111/rec.14218

Laura C. Shriver, John Tull, Elizabeth A. Leger

{"title":"Nontarget effects of herbicides on annual forbs and seeded grass in the Great Basin, United States, are partially offset by planting depth and application rate","authors":"Laura C. Shriver, John Tull, Elizabeth A. Leger","doi":"10.1111/rec.14218","DOIUrl":"https://doi.org/10.1111/rec.14218","url":null,"abstract":"Pre‐emergent herbicides can reduce the abundance of invasive annual plants, but they can also harm native plants, particularly annuals or perennial seedlings, including seeds planted during restoration. We assessed the effects of imazapic and indaziflam on invasive target and nontarget native plants in the Great Basin, a region with extensive invasive annual grasses. We tested nontarget effects on native annual forbs in an agricultural field previously used to grow native annual forbs, which contained a large seed bank. We seeded perennial grass (Elymus elymoides) at multiple depths to determine susceptibility and resistance. Herbicides were applied at full and reduced rates to mimic the effect of litter in natural systems. We observed reductions in most non‐native species in all treatments, but also extensive reductions of native annual forbs, although these were offset at lower application rates, and some species (e.g. Amsinckia tessellata and Microsteris gracilis) were less susceptible than others. Herbicides, particularly indaziflam, reduced E. elymoides emergence, but planting seeds at 2–3 cm depths improved emergence, particularly for imazapic, with 15–68% greater emergence than seeds planted at 1 cm. We suggest surveys for native annual forbs and resistant invaders before applying herbicides and field testing to determine whether reduced rates could provide weed control while maintaining annual forbs. We suggest planting E. elymoides at 2–3 cm when applying herbicides, an approach that may be effective for other species. Herbicide use can be an effective tool, but our results indicate that mitigation of nontarget effects will be needed to maintain native plant diversity.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"7 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing nest box entrance diameter impacts mammal occupancy 缩小巢箱入口直径会影响哺乳动物的占据率

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-06-25 DOI: 10.1111/rec.14211

Alexander Hendry, Andrew M. Rogers, Salit Kark

{"title":"Reducing nest box entrance diameter impacts mammal occupancy","authors":"Alexander Hendry, Andrew M. Rogers, Salit Kark","doi":"10.1111/rec.14211","DOIUrl":"https://doi.org/10.1111/rec.14211","url":null,"abstract":"Tree hollows are an important resource for cavity‐nesting birdlife. When large, old trees are removed from a landscape, nest boxes are often installed as part of restoration efforts to replace lost natural cavities. If nest boxes are to be successful conservation tools, non‐target species, particularly competitive and predatory species, need to be prevented from entering nest boxes. Several different modifications to nest boxes aimed at excluding non‐target species have been trialed in previous studies. We tested the effectiveness of reducing the entrance diameter of nest boxes to exclude non‐target species in Southeast Queensland, Australia. We used restrictor plates to reduce the entrance diameter of nest boxes from 90 to 60 and 50 mm and compared the wildlife occupancy of nest boxes with these three entrance diameters. We found that Common brushtail possums, a predator of cavity‐nesting birds and eggs, were significantly less likely to occupy nest boxes with reduced entrance diameters and were excluded from nest boxes with a 50‐mm entrance diameter. Squirrel gliders occupied nest boxes with all three entrance diameters. Introduced species, namely the Common myna and the European honeybee, also occupied nest boxes with restrictor plates. Installation of nest boxes with reduced entrance diameters is a simple and effective strategy to exclude brushtail possums from nest boxes. However, a reduced entrance diameter cannot exclude other non‐target species, and we suggest that other exclusion strategies should be used in conjunction with reduced entrance diameters to increase the occupation of nest boxes by native birds.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"12 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First steps in restoring Río de la Plata grasslands: the importance of harvest method and season 恢复拉普拉塔河草地的第一步：收割方法和季节的重要性

IF 3.2 3区环境科学与生态学

Restoration Ecology Pub Date : 2024-06-25 DOI: 10.1111/rec.14219

Pedro G. Pañella, Anaclara Guido, Marcelo Pereira, Felipe Lezama

{"title":"First steps in restoring Río de la Plata grasslands: the importance of harvest method and season","authors":"Pedro G. Pañella, Anaclara Guido, Marcelo Pereira, Felipe Lezama","doi":"10.1111/rec.14219","DOIUrl":"https://doi.org/10.1111/rec.14219","url":null,"abstract":"Current trends in agricultural intensification lead to degraded grasslands, requiring their restoration through native species reintroduction. Various techniques are available for harvesting seeds from donor sites. However, little is known about their performance in South American C3/C4 mixed grasslands, where studies are scarce. Their particular species composition and phenology, with different flowering periods, require specific harvest strategies. We evaluated mechanical seed harvest in a northern Uruguay grassland, part of Río de la Plata grasslands. Performance of two mechanical harvest methods (seed‐stripper and dry hay) was compared in two harvest seasons (late‐spring and mid‐summer). The evaluation considered the quantity and identity of harvested seeds, and their germination in a greenhouse. Hand collections were made to assess standing seed yield. For each seed mixture, efficiency of mechanical harvests (number of seeds and seedlings compared to hand collection), proportion of germinated seeds, species transfer relative to donor site, and composition were calculated. Results revealed trade‐offs between harvests: seed‐stripper in late‐spring presented low seed collection efficiency (2% for seeds, 5% for seedlings) and species richness (43% transfer), but high seed germination (64%), showing selectivity toward winter species; seed‐stripper in mid‐summer and dry hay in both seasons showed high seed collection efficiency (42–154% for seeds, 26–50% for seedlings) and species richness (65–80% transfer), resembling donor site, albeit lower seed germination (9–20%). Seed‐stripper performance varied between seasons, while dry hay remained consistently effective. These results are pioneering for grassland restoration in Uruguay, encouraging future studies to focus on establishment in the field.","PeriodicalId":54487,"journal":{"name":"Restoration Ecology","volume":"10 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141519272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0