Austral Ecology最新文献_第3页

Multiscale Environmental Drivers of Aquatic Insect Assemblages in Cerrado Streams 塞拉多溪流中水生昆虫群落的多尺度环境驱动因素

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-17 DOI: 10.1111/aec.70203

Juliana Simião-Ferreira, Isabella Milhomem de Paiva Almeida, Victor Yuri da Silva Moreira, Hugo de Oliveira Barbosa, Daniel de Paiva Silva, Sara Lodi, Daniel Albeny-Simões, Maisa Carvalho Vieira, Hasley Rodrigo Pereira, Bruno Spacek Godoy

{"title":"Multiscale Environmental Drivers of Aquatic Insect Assemblages in Cerrado Streams","authors":"Juliana Simião-Ferreira, Isabella Milhomem de Paiva Almeida, Victor Yuri da Silva Moreira, Hugo de Oliveira Barbosa, Daniel de Paiva Silva, Sara Lodi, Daniel Albeny-Simões, Maisa Carvalho Vieira, Hasley Rodrigo Pereira, Bruno Spacek Godoy","doi":"10.1111/aec.70203","DOIUrl":"https://doi.org/10.1111/aec.70203","url":null,"abstract":"Lotic ecosystems are structured by factors operating at multiple spatial scales. We investigated how local and regional environmental variables influence the composition, richness, and abundance of Ephemeroptera, Plecoptera and Trichoptera (EPT) assemblages in streams of the Tocantins–Araguaia basin in the Cerrado (Brazilian savanna) biome, Goiás, Brazil. We sampled aquatic insects and environmental variables in 19 streams. We employed multiple regression analyses to evaluate the impact of spatial and environmental factors on taxonomic richness and abundance. We applied multiscale multivariate codependence analysis (MMCA) to examine the environmental and spatial effects on assemblage composition. Our results revealed that taxonomic richness increased with the percentage of agriculture in the watershed at finer scales, reflecting colonisation by tolerant taxa. Total abundance, in turn, responded to local factors (conductivity and temperature) and watershed areas. The assemblage composition of EPT was primarily structured by broad-scale spatial gradients (~192 and ~128 km), associated with altitude and pH, respectively. These findings demonstrate that spatial processes (limited dispersal) act together with specific environmental filters to shape assemblages. We conclude that conservation strategies for aquatic biodiversity in the Cerrado must adopt a multiscale perspective that considers both local factors and watershed integrity.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147566637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing Soil Seed Bank Under Different Techniques for Cerrado Restoration 塞拉多不同修复技术下土壤种子库评价

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-13 DOI: 10.1111/aec.70198

Lucas Dias Sanglade, Raquel Stucchi Boschi, Dalva Maria da Silva Matos, Vânia Regina Pivello

{"title":"Assessing Soil Seed Bank Under Different Techniques for Cerrado Restoration","authors":"Lucas Dias Sanglade, Raquel Stucchi Boschi, Dalva Maria da Silva Matos, Vânia Regina Pivello","doi":"10.1111/aec.70198","DOIUrl":"https://doi.org/10.1111/aec.70198","url":null,"abstract":"<div>\u0000 \u0000 The evaluation of the soil seed bank is essential to understand the potential for natural regeneration and ecological processes in areas undergoing restoration. We assessed changes in species abundance and diversity in the soil seed bank within a cerrado sensu stricto (typical Brazilian savanna) restoration experiment conducted in a degraded pasture invaded by Urochloa spp., characterized by low natural regeneration. Four treatments were implemented: active restoration by seedling planting with and without fertilization (Sf and Sp), assisted natural regeneration (An) and control (Cr). Soil seed bank samples were collected from 2020 to 2023 (T1–T4), with 64 samples per year, and germinated in a greenhouse for 120 days. PERMANOVA analyses indicated greater seedling abundance in T4 than in T1 and T2 (pseudo-F = 25.016, p < 0.003). The Sf and Sp treatments resulted in higher seedling abundance than An and Cr (p < 0.05). SIMPER analyses revealed high dissimilarity between T1 and T4 (81.17%), with an increase in native ruderal species and a reduction in Urochloa spp. over time. Overall, restoration treatments increased the abundance and diversity of native species, demonstrating their effectiveness in promoting ecological recovery.\u0000 </div>","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Assessing Soil Seed Bank Under Different Techniques for Cerrado Restoration 塞拉多不同修复技术下土壤种子库评价

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-13 DOI: 10.1111/aec.70198

Lucas Dias Sanglade, Raquel Stucchi Boschi, Dalva Maria da Silva Matos, Vânia Regina Pivello

{"title":"Assessing Soil Seed Bank Under Different Techniques for Cerrado Restoration","authors":"Lucas Dias Sanglade, Raquel Stucchi Boschi, Dalva Maria da Silva Matos, Vânia Regina Pivello","doi":"10.1111/aec.70198","DOIUrl":"https://doi.org/10.1111/aec.70198","url":null,"abstract":"<div>\u0000 \u0000 The evaluation of the soil seed bank is essential to understand the potential for natural regeneration and ecological processes in areas undergoing restoration. We assessed changes in species abundance and diversity in the soil seed bank within a cerrado sensu stricto (typical Brazilian savanna) restoration experiment conducted in a degraded pasture invaded by Urochloa spp., characterized by low natural regeneration. Four treatments were implemented: active restoration by seedling planting with and without fertilization (Sf and Sp), assisted natural regeneration (An) and control (Cr). Soil seed bank samples were collected from 2020 to 2023 (T1–T4), with 64 samples per year, and germinated in a greenhouse for 120 days. PERMANOVA analyses indicated greater seedling abundance in T4 than in T1 and T2 (pseudo-F = 25.016, p < 0.003). The Sf and Sp treatments resulted in higher seedling abundance than An and Cr (p < 0.05). SIMPER analyses revealed high dissimilarity between T1 and T4 (81.17%), with an increase in native ruderal species and a reduction in Urochloa spp. over time. Overall, restoration treatments increased the abundance and diversity of native species, demonstrating their effectiveness in promoting ecological recovery.\u0000 </div>","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147565649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Seasonal and Within-Day Variation on Hummingbirds Visits and Dominance Hierarchy in a Brazilian Cerrado Area 巴西塞拉多地区蜂鸟来访和优势等级的季节和日变化

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-11 DOI: 10.1111/aec.70194

Jeane Lima-Passos, Andréa Cardoso Araujo, Camila Silveira Souza, Caio Graco Machado

{"title":"Seasonal and Within-Day Variation on Hummingbirds Visits and Dominance Hierarchy in a Brazilian Cerrado Area","authors":"Jeane Lima-Passos, Andréa Cardoso Araujo, Camila Silveira Souza, Caio Graco Machado","doi":"10.1111/aec.70194","DOIUrl":"https://doi.org/10.1111/aec.70194","url":null,"abstract":"Plant-hummingbird interaction networks can be influenced by environmental conditions and resources, which vary seasonally and daily. We aimed to understand how variations in these parameters across these two temporal windows influence patterns of plant-hummingbird interactions and hummingbirds dominance hierarchies in a Brazilian Cerrado located on Bahia state. We recorded hummingbird species, the plants they visit, and their agonistic interactions for 13 months. We register 2233 visits from four hummingbird species to 15 plants, with only 0.02% being illegitimate. The frequency of visits was positively correlated with flower availability, and the ornithophilous species Calliandra dysantha (Fabaceae) was the most visited plant. The annual interaction network displayed low specialisation (H2' = 0.42, Δ = 0.41) and modularity (Qw = 0.25, Δ = 0.22). We did not observe significant differences in the hummingbird's visitation frequencies at different periods of the day. Most visits occurred during the rainy season (70.9%) when the network showed lower modularity, higher specialisation and greater trophic niche overlap. We recorded 101 agonistic interactions, with Chrysolampis mosquitus and Chlorostilbon lucidus involved in approximately 80% of them. Eupetomena macroura was the dominant species overall and during the dry season, while C. mosquitus males dominated in the rainy season. Dominance was not associated with the number of visits (R2 = 0.32, p = 0.25). Increased flower abundance during the rainy season was linked to higher visiting frequency and agonistic interactions. These results underscore the role of resource availability, especially ornithophilous plants, in shaping plant-hummingbird interactions.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70194","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal and Within-Day Variation on Hummingbirds Visits and Dominance Hierarchy in a Brazilian Cerrado Area 巴西塞拉多地区蜂鸟来访和优势等级的季节和日变化

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-11 DOI: 10.1111/aec.70194

Jeane Lima-Passos, Andréa Cardoso Araujo, Camila Silveira Souza, Caio Graco Machado

{"title":"Seasonal and Within-Day Variation on Hummingbirds Visits and Dominance Hierarchy in a Brazilian Cerrado Area","authors":"Jeane Lima-Passos, Andréa Cardoso Araujo, Camila Silveira Souza, Caio Graco Machado","doi":"10.1111/aec.70194","DOIUrl":"https://doi.org/10.1111/aec.70194","url":null,"abstract":"Plant-hummingbird interaction networks can be influenced by environmental conditions and resources, which vary seasonally and daily. We aimed to understand how variations in these parameters across these two temporal windows influence patterns of plant-hummingbird interactions and hummingbirds dominance hierarchies in a Brazilian Cerrado located on Bahia state. We recorded hummingbird species, the plants they visit, and their agonistic interactions for 13 months. We register 2233 visits from four hummingbird species to 15 plants, with only 0.02% being illegitimate. The frequency of visits was positively correlated with flower availability, and the ornithophilous species Calliandra dysantha (Fabaceae) was the most visited plant. The annual interaction network displayed low specialisation (H2' = 0.42, Δ = 0.41) and modularity (Qw = 0.25, Δ = 0.22). We did not observe significant differences in the hummingbird's visitation frequencies at different periods of the day. Most visits occurred during the rainy season (70.9%) when the network showed lower modularity, higher specialisation and greater trophic niche overlap. We recorded 101 agonistic interactions, with Chrysolampis mosquitus and Chlorostilbon lucidus involved in approximately 80% of them. Eupetomena macroura was the dominant species overall and during the dry season, while C. mosquitus males dominated in the rainy season. Dominance was not associated with the number of visits (R2 = 0.32, p = 0.25). Increased flower abundance during the rainy season was linked to higher visiting frequency and agonistic interactions. These results underscore the role of resource availability, especially ornithophilous plants, in shaping plant-hummingbird interactions.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70194","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bright and Long: Day Length Modulates the Phenology of Two Myrtaceae Species in Upper Montane Mixed Ombrophilous Forest 明亮和漫长：日长调节上山混交林中两种桃金娘科物候

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-11 DOI: 10.1111/aec.70200

Bruno Jan Schramm Corrêa, Adriano Valentin-Silva, Alexandra Cristina Schatz Sá, Jaçanan Eloisa de Freitas Milani, Adelar Mantovani, Roseli Lopes da Costa Bortoluzzi

{"title":"Bright and Long: Day Length Modulates the Phenology of Two Myrtaceae Species in Upper Montane Mixed Ombrophilous Forest","authors":"Bruno Jan Schramm Corrêa, Adriano Valentin-Silva, Alexandra Cristina Schatz Sá, Jaçanan Eloisa de Freitas Milani, Adelar Mantovani, Roseli Lopes da Costa Bortoluzzi","doi":"10.1111/aec.70200","DOIUrl":"https://doi.org/10.1111/aec.70200","url":null,"abstract":"The Upper Montane Mixed Ombrophilous Forest is a humid montane ecosystem characterised by cold winters and a rich Myrtaceae flora. We investigated the vegetative and reproductive phenology of Myrceugenia euosma (O. Berg) D. Legrand and Siphoneugena reitzii D. Legrand and its relationships with climatic variables over 35 months in southern Brazil. Using activity and intensity indices, circular statistics and generalised linear models, we assessed seasonality and climatic influences on phenophases. Both species exhibited continuous vegetative phenology. Reproductive phenophases were annual, seasonal and synchronous within species but temporally segregated between them. This phenological behaviour suggests niche partitioning that may reduce competition for pollinators and dispersers. Vegetative phenophases showed limited climatic dependence, with leaf flush in S. reitzii responding only to current day length. Reproductive phenophases were positively related to day length in both species, with distinct temporal lags. Comparisons of the mean onset and peak angles indicated interannual variation in most phenophases. Phenological advances were more frequent (13 events, 6–32 days) than delays (8 events, 6–59 days), suggesting climate-related shifts. These results indicate that abiotic factors act as environmental filters shaping the phenological patterns of sympatric Myrtaceae in montane environments.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bright and Long: Day Length Modulates the Phenology of Two Myrtaceae Species in Upper Montane Mixed Ombrophilous Forest 明亮和漫长：日长调节上山混交林中两种桃金娘科物候

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-11 DOI: 10.1111/aec.70200

Bruno Jan Schramm Corrêa, Adriano Valentin-Silva, Alexandra Cristina Schatz Sá, Jaçanan Eloisa de Freitas Milani, Adelar Mantovani, Roseli Lopes da Costa Bortoluzzi

{"title":"Bright and Long: Day Length Modulates the Phenology of Two Myrtaceae Species in Upper Montane Mixed Ombrophilous Forest","authors":"Bruno Jan Schramm Corrêa, Adriano Valentin-Silva, Alexandra Cristina Schatz Sá, Jaçanan Eloisa de Freitas Milani, Adelar Mantovani, Roseli Lopes da Costa Bortoluzzi","doi":"10.1111/aec.70200","DOIUrl":"https://doi.org/10.1111/aec.70200","url":null,"abstract":"The Upper Montane Mixed Ombrophilous Forest is a humid montane ecosystem characterised by cold winters and a rich Myrtaceae flora. We investigated the vegetative and reproductive phenology of Myrceugenia euosma (O. Berg) D. Legrand and Siphoneugena reitzii D. Legrand and its relationships with climatic variables over 35 months in southern Brazil. Using activity and intensity indices, circular statistics and generalised linear models, we assessed seasonality and climatic influences on phenophases. Both species exhibited continuous vegetative phenology. Reproductive phenophases were annual, seasonal and synchronous within species but temporally segregated between them. This phenological behaviour suggests niche partitioning that may reduce competition for pollinators and dispersers. Vegetative phenophases showed limited climatic dependence, with leaf flush in S. reitzii responding only to current day length. Reproductive phenophases were positively related to day length in both species, with distinct temporal lags. Comparisons of the mean onset and peak angles indicated interannual variation in most phenophases. Phenological advances were more frequent (13 events, 6–32 days) than delays (8 events, 6–59 days), suggesting climate-related shifts. These results indicate that abiotic factors act as environmental filters shaping the phenological patterns of sympatric Myrtaceae in montane environments.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brazil's Invisible Invaders: Are Craspedacusta Jellyfish a Ticking Ecological Bomb? 巴西的隐形入侵者：海苔水母是一个滴答作响的生态炸弹吗？

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-10 DOI: 10.1111/aec.70201

Luana Maria Deoclécio da Silva, Maria I. Deserti, Mirian N. Pereira, Jeferson A. Durán-Fuentes, Maximiliano M. Maronna, Florian Lüskow, Evgeny A. Pakhomov, Sérgio N. Stampar

{"title":"Brazil's Invisible Invaders: Are Craspedacusta Jellyfish a Ticking Ecological Bomb?","authors":"Luana Maria Deoclécio da Silva, Maria I. Deserti, Mirian N. Pereira, Jeferson A. Durán-Fuentes, Maximiliano M. Maronna, Florian Lüskow, Evgeny A. Pakhomov, Sérgio N. Stampar","doi":"10.1111/aec.70201","DOIUrl":"https://doi.org/10.1111/aec.70201","url":null,"abstract":"The invasive freshwater jellyfish Craspedacusta sowerbii, likely of Asian origin, is globally distributed, yet its invasion history in South America remains poorly understood. Following a mass mortality event of tilapia (Oreochromis niloticus) during a jellyfish bloom in Paraná, Brazil, in March 2022, we conducted morphological and molecular analyses on C. sowerbii from two southern Brazilian states (Paraná and Santa Catarina). We generated the first mitochondrial cytochrome c oxidase subunit I (COI) gene sequences for this species in Brazil. Morphological analysis confirmed the species identity, with the Paraná population consisting exclusively of females. Phylogenetic analysis revealed two distinct genetic lineages, indicating at least two separate introduction events. The Paraná population clustered with haplotypes from Chile, whereas the Santa Catarina population was closely related to haplotypes from southern Asia (Singapore and China). These findings underscore the complex, human-mediated, and yet not fully understood invasion pathways of C. sowerbii, highlighting the need for further monitoring to understand its distribution and ecological impacts.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70201","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brazil's Invisible Invaders: Are Craspedacusta Jellyfish a Ticking Ecological Bomb? 巴西的隐形入侵者：海苔水母是一个滴答作响的生态炸弹吗？

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-10 DOI: 10.1111/aec.70201

Luana Maria Deoclécio da Silva, Maria I. Deserti, Mirian N. Pereira, Jeferson A. Durán-Fuentes, Maximiliano M. Maronna, Florian Lüskow, Evgeny A. Pakhomov, Sérgio N. Stampar

{"title":"Brazil's Invisible Invaders: Are Craspedacusta Jellyfish a Ticking Ecological Bomb?","authors":"Luana Maria Deoclécio da Silva, Maria I. Deserti, Mirian N. Pereira, Jeferson A. Durán-Fuentes, Maximiliano M. Maronna, Florian Lüskow, Evgeny A. Pakhomov, Sérgio N. Stampar","doi":"10.1111/aec.70201","DOIUrl":"https://doi.org/10.1111/aec.70201","url":null,"abstract":"The invasive freshwater jellyfish Craspedacusta sowerbii, likely of Asian origin, is globally distributed, yet its invasion history in South America remains poorly understood. Following a mass mortality event of tilapia (Oreochromis niloticus) during a jellyfish bloom in Paraná, Brazil, in March 2022, we conducted morphological and molecular analyses on C. sowerbii from two southern Brazilian states (Paraná and Santa Catarina). We generated the first mitochondrial cytochrome c oxidase subunit I (COI) gene sequences for this species in Brazil. Morphological analysis confirmed the species identity, with the Paraná population consisting exclusively of females. Phylogenetic analysis revealed two distinct genetic lineages, indicating at least two separate introduction events. The Paraná population clustered with haplotypes from Chile, whereas the Santa Catarina population was closely related to haplotypes from southern Asia (Singapore and China). These findings underscore the complex, human-mediated, and yet not fully understood invasion pathways of C. sowerbii, highlighting the need for further monitoring to understand its distribution and ecological impacts.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70201","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Over the Hedge: Assessment of the Invasiveness and Potential Distribution of the Barrier Plant, Metrosideros excelsa (Myrtaceae), in South Africa and Beyond 篱笆墙之上：南非及其他地区屏障植物金桃科的入侵性和潜在分布评估

IF 1.6 4区环境科学与生态学

Austral Ecology Pub Date : 2026-03-08 DOI: 10.1111/aec.70189

Sjirk Geerts, Nicole Malan, Vernon Visser, Tineke Kraaij

{"title":"Over the Hedge: Assessment of the Invasiveness and Potential Distribution of the Barrier Plant, Metrosideros excelsa (Myrtaceae), in South Africa and Beyond","authors":"Sjirk Geerts, Nicole Malan, Vernon Visser, Tineke Kraaij","doi":"10.1111/aec.70189","DOIUrl":"https://doi.org/10.1111/aec.70189","url":null,"abstract":"Ornamental plants, including barrier or hedge plants, are important in horticulture. Occurring at the urban to natural barrier, plants are often conflict of interest species. Here, we study the invading ornamental barrier plant Metrosideros excelsa Soland ex Gaertn. (Myrtaceae) and determine the current and potential future distribution and the risk posed to South Africa. Roadside surveys were undertaken in the coastal regions of South Africa, yielding 1541 records. Most records are of large, planted trees, indicating a historical horticultural popularity. The 47 naturalising populations occur mostly in low-lying, seasonally wet coastal areas within the fynbos biome of South Africa. Globally coastal parts of southern Australia, Tasmania, southern Brazil, Uruguay, Argentina, a few scattered areas in the mountains of northern South America and along the Mediterranean are most suitable, while in South Africa, high environmental suitability was predicted along the southwest and south coast. Eradication of M. excelsa from South Africa is unlikely as the species is widespread, and since it is a popular hedge plant in coastal areas, biological control is advisable to minimise conflicts. The risk analysis for South Africa suggests that the species poses a high risk, has potential moderate environmental and minor socio-economic impacts and the taxon should be controlled as part of a national management programme. Countries in which M. excelsa is a popular ornamental tree and with similar climates and habitats to invaded areas in South Africa should consider prevention measures.","PeriodicalId":8663,"journal":{"name":"Austral Ecology","volume":"51 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aec.70189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0