Biotropica最新文献_第2页

Animal–Plant Interactions Under Defaunation: Consequences for Amazonian Trees of Commercial Interest 毁损下的动植物相互作用：对具有商业利益的亚马逊树木的影响

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-27 DOI: 10.1111/btp.70183

Arlison Castro, Rodrigo Fadini, Mathias Pires, Carlos R. Brocardo, Icaro Wilker, Clarissa Rosa

{"title":"Animal–Plant Interactions Under Defaunation: Consequences for Amazonian Trees of Commercial Interest","authors":"Arlison Castro, Rodrigo Fadini, Mathias Pires, Carlos R. Brocardo, Icaro Wilker, Clarissa Rosa","doi":"10.1111/btp.70183","DOIUrl":"10.1111/btp.70183","url":null,"abstract":"The decline of medium- and large-bodied terrestrial mammal populations can compromise key ecological processes such as seed dispersal. We conducted an exclusion experiment to simulate a defaunation gradient, monitoring the removal of 1800 seeds from six plant species of commercial interest in the Amazon Forest. Overall, mammal exclusion significantly reduced seed removal, particularly under severe exclusion conditions. However, this effect was species-specific. Only Lecythis lurida, the species with the largest seeds, showed a significant reduction in removal under severe defaunation. Proechimys spp. interacted with most seeds in all experimental treatments, except for L. lurida, whose seeds were removed only by Dasyprocta croconota. While Proechimys spp. likely acts as a seed predator for all tested species, D. croconota can contribute to seed dispersal and consequently to the recruitment of a variety of plant species. Our findings reinforce that while defaunation impacts seed removal, its effects depend on plant traits and the identity of dispersers. The loss of terrestrial mammals may compromise long-term plant recruitment, especially for species that rely on larger mammals for effective seed removal. The loss of ecological interactions may jeopardize the sustainable supply of timber and non-timber products, directly affecting the income and food security of local traditional cooperatives in the Amazon.","PeriodicalId":8982,"journal":{"name":"Biotropica","volume":"58 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/btp.70183","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Predation on Northern Silky Anteater (Cyclopes dorsalis) by Tiger Rat Snake (Spilotes pullatus) in a Rainforest Fragment in Costa Rica 哥斯达黎加雨林中虎鼠蛇（Spilotes pullatus）捕食北方丝食蚁兽（Cyclopes dorsalis）

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-26 DOI: 10.1111/btp.70185

David Becker, Emmanuel Rojas, Bernal Rodríguez-Herrera, Ingo Grass, Thomas Hiller

引用次数: 0

Urbanization Intensity, Vegetation Cover and Plant Vigor Affects Stem Galls Occurrence and Abundance in a Widely Distributed Ruderal Tropical Plant 城市化强度、植被覆盖度和植物活力对分布广泛的热带原始植物茎瘿发生和丰度的影响

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-24 DOI: 10.1111/btp.70178

Luziene Seixas, Dalton Serafim, João Victor Sabino Santos, Kim Ribeiro Barão, Guilherme Ramos Demetrio

{"title":"Urbanization Intensity, Vegetation Cover and Plant Vigor Affects Stem Galls Occurrence and Abundance in a Widely Distributed Ruderal Tropical Plant","authors":"Luziene Seixas, Dalton Serafim, João Victor Sabino Santos, Kim Ribeiro Barão, Guilherme Ramos Demetrio","doi":"10.1111/btp.70178","DOIUrl":"10.1111/btp.70178","url":null,"abstract":"Urbanization is a major driver of environmental change and biodiversity loss, impacting species and ecological interactions. Insects, as key terrestrial biodiversity components, engage in diverse interactions with plants, including gall induction. Host plant vigor often predicts higher herbivore abundance, but this relationship is understudied in urban contexts. We investigated the effects of urbanization intensity, vegetation cover, and plant vigor on the occurrence and abundance of stem galls in Turnera subulata, a widespread tropical ruderal species. Surveys were conducted at 14 sites across an urbanization gradient in Penedo, Brazil. For each plant, we recorded stem gall presence and abundance and measured vigor through biomass-related traits. Impervious surface area was used as a proxy for urbanization intensity, and native vegetation cover as an indicator of native vegetation. Results showed that urbanization did not influence gall occurrence but reduced gall abundance. Conversely, sites with greater vegetation cover had higher gall occurrence and abundance. Additionally, more vigorous plants, particularly those with greater stem biomass, hosted more galls, supporting the plant vigor hypothesis. These findings underscore the role of vegetation cover in maintaining specialized interactions between gall-inducing insects and host plants, mitigating urbanization's negative effects on these herbivores. Our study provides evidence that plant vigor remains a key factor influencing gall abundance in urban environments. We advocate for the conservation and strategic planning of native vegetation in tropical cities to sustain specialized ecological interactions amid ongoing urban expansion.","PeriodicalId":8982,"journal":{"name":"Biotropica","volume":"58 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/btp.70178","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Amphibians' Expansion to Record Elevations Influences Chytrid (Batrachochytrium dendrobatidis) Infection Dynamics 两栖动物向纪录海拔扩张对壶菌（Batrachochytrium dendroatidis）感染动力学的影响

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-23 DOI: 10.1111/btp.70165

Emma Steigerwald, Cassandra Gendron, Juan C. Chaparro, Rosemary G. Gillespie, Allie Byrne, Rasmus Nielsen, Erica Bree Rosenblum

{"title":"Amphibians' Expansion to Record Elevations Influences Chytrid (Batrachochytrium dendrobatidis) Infection Dynamics","authors":"Emma Steigerwald, Cassandra Gendron, Juan C. Chaparro, Rosemary G. Gillespie, Allie Byrne, Rasmus Nielsen, Erica Bree Rosenblum","doi":"10.1111/btp.70165","DOIUrl":"10.1111/btp.70165","url":null,"abstract":"The climate-driven range expansion of host species could impact emerging infectious disease events through several mechanisms, with repercussions for conservation and public health. For instance, infection outcomes may be affected by the different responses of hosts and pathogens to new environments. Additionally, range expansions may create novel transmission opportunities as host movement patterns change. Here, we use an integrative approach to explore how the infection dynamics of Marbled four-eyed frogs (Pleurodema marmoratum) with the pathogen Batrachochytrium dendrobatidis (Bd) have been impacted by their elevational range expansion in the Cordillera Vilcanota, Peru. With field surveys, we establish that range expansion created new opportunities for Bd transmission: P. marmoratum are now continuously distributed along a recently deglaciated mountain pass between populations separated by heavily glaciated mountains. With sequence data, we identify Bd from the Vilcanota as belonging to the lineage most frequently associated with amphibian declines (BdGPL) and find that it lacks genetic structure despite possessing abundant variation, consistent with high rates of local dispersal. With temperature loggers, we demonstrate that upslope expansion exposed frogs and Bd to challenging new thermal regimes. Finally, with size, mass, and Bd infection data from adult P. marmoratum, we find that the new elevations colonized may constrain infection intensities and influence sublethal costs of infection: at low elevations, infected frogs have lower body condition than uninfected frogs, while at high elevations, infected frogs have smaller bodies than uninfected frogs. Together, our results suggest that the climate-driven range shifts of host species may influence pathogen transmission and infection outcomes.","PeriodicalId":8982,"journal":{"name":"Biotropica","volume":"58 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/btp.70165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Anti-Predation and Size-Dependent Gas Exchange Functions of Amazonian Architect Cicada Towers 亚马逊建筑蝉塔的反捕食和大小依赖气体交换功能

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-23 DOI: 10.1111/btp.70182

Marina Mega, Izadora N. Gonzalez, Maria Luiza Busato, Sara S. Feitosa, Rodrigo F. Fadini, Pedro A. C. L. Pequeno

引用次数: 0

Estimating Sunda Clouded Leopard Lifespans From Minimum Residence Times via Long-Term Photo-Tracking 通过长期照片跟踪从最短停留时间估计巽他云豹的寿命

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-22 DOI: 10.1111/btp.70169

Katharina Kasper, Thye Lim Tee, Roshan Guharajan, Azlan Mohamed, Seth T. Wong, Jürgen Niedballa, Jesse F. Abrams, Johnny Kissing, Hiromitsu Samejima, Rahel Sollmann, Andreas Wilting, Wai-Ming Wong

引用次数: 0

Grass Communities Differ Floristically Under Different Dominant Trees in Savannas in Thailand and Cambodia 泰国和柬埔寨稀树草原不同优势乔木下草群落的区系差异

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-17 DOI: 10.1111/btp.70166

Jess Rickenback, Watchara Arthan, R. Toby Pennington, Maria S. Vorontsova, Youleang Peou, Hazel France, Caroline E. R. Lehmann

{"title":"Grass Communities Differ Floristically Under Different Dominant Trees in Savannas in Thailand and Cambodia","authors":"Jess Rickenback, Watchara Arthan, R. Toby Pennington, Maria S. Vorontsova, Youleang Peou, Hazel France, Caroline E. R. Lehmann","doi":"10.1111/btp.70166","DOIUrl":"https://doi.org/10.1111/btp.70166","url":null,"abstract":"Southeast Asian savannas are some of the least studied ecosystems, with understanding of their function and resilience limited by a lack of understanding of grass species richness and composition. Since savannas are characterized by their grassy ground layer, we conducted field surveys in Thailand and Cambodia to assess grass community composition under different dominant tree genera. We conducted field surveys in four savanna ecosystems characterized by (i) Dipterocarpus, (ii) Pinus, (iii) Pterocarpus, and (iv) Shorea tree genera. In each, we recorded grass species composition and richness. We assessed differences in composition using PERMANOVA, patterns of grass species discovery using species accumulation curves, and common species with relative frequency distributions. In total, we recorded 160 unique grass species. These savannas support distinct grassy assemblages, with diverse patterns of species accumulation, richness, and overlap. Common grasses were frequently shared between ecosystems. Grass assemblages were functionally similar, comprising mostly C4 perennial species. Across the ecosystems, grass communities were mostly composed of tribe Andropogoneae, although we recorded common fire-adapted C3 grasses including Vietnamosasa ciliata (A. Camus) T.Q. Nguyen and Vietnamosasa pusilla (A. Chev. & A. Camus) T.Q. Nguyen. The savanna ecosystems of Thailand and Cambodia are characterized by Dipterocarpus, Pinus, Pterocarpus, and Shorea tree species, which support distinct grass assemblages. Diversity varies across savanna landscapes, with the highest grass species diversity found in the Dipterocarpus and Shorea savannas. Increased sampling is necessary to fully characterize the grass flora of Southeast Asian savannas and their responses to environment.","PeriodicalId":8982,"journal":{"name":"Biotropica","volume":"58 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/btp.70166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effects of Fruiting Neighborhood, Plant Traits, and Fruit Traits on Frugivore Visitation and Fruit Removal for an Understory Palm 结果邻域、植株性状和果实性状对林下棕榈果实取食和果实摘取的影响

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-13 DOI: 10.1111/btp.70172

Callie Rose Chenevert, Therese Lamperty, Domingo Cabrera, Jordan Karubian

{"title":"Effects of Fruiting Neighborhood, Plant Traits, and Fruit Traits on Frugivore Visitation and Fruit Removal for an Understory Palm","authors":"Callie Rose Chenevert, Therese Lamperty, Domingo Cabrera, Jordan Karubian","doi":"10.1111/btp.70172","DOIUrl":"https://doi.org/10.1111/btp.70172","url":null,"abstract":"Seed dispersal services are key to maintaining healthy forest ecosystems, yet our understanding of the factors that influence visitation and frugivory between conspecific plants remains incomplete. Although fruiting neighborhood, plant traits, and fruit traits have been shown to individually influence frugivory, few studies have concurrently evaluated the relative importance of these factors. We address this knowledge gap by simultaneously assessing multiple factors thought to influence frugivory. Specifically, we evaluated how the fruiting neighborhood, defined as the number of fruiting palms in a 35 m radius, and relevant traits at the level of individual plants (e.g., height, crop size) and fruits (e.g., fruit and seed size, water and sucrose content) influenced frugivore visitation and the number of fruits removed per visit in a common understory palm in Northwestern Ecuador, Synechanthus warscewiczianus. A higher number of conspecific fruiting neighbors exhibited a decrease in visitation, suggesting competition among palms that share frugivore mutualists for dispersal services. However, the number of fruits removed per frugivore visit appeared to be affected by crop size and fruit traits of individual palms. Larger crop and fruit sizes were positively associated with the number of fruits removed per visit and indicates frugivore satiation is not a main determinant of fruit consumption during visits. Taken together, our results suggest larger-scale factors like fruiting neighborhood may affect a frugivore's decision to visit a palm, yet finer-scale fruit traits may drive fruit removal once a palm is selected, thereby influencing variation in seed dispersal services at the individual plant level.","PeriodicalId":8982,"journal":{"name":"Biotropica","volume":"58 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/btp.70172","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147280937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Widespread Detection of Amphibian Pathogens in Frog-Biting Midges (Corethrellidae): Implications for Xenosurveillance 在叮蛙蠓科中广泛发现两栖类病原体：对异种监测的意义

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-13 DOI: 10.1111/btp.70173

Jonas Virgo, Maximilian Sigl, Thomas Eltz, Maximilian Schweinsberg

引用次数: 0

The Bat Dermanura watsoni Builds Thorny Tents in an Endangered Palm 蝙蝠在濒临灭绝的棕榈树上搭起带刺的帐篷

IF 1.7 3区环境科学与生态学

Biotropica Pub Date : 2026-02-11 DOI: 10.1111/btp.70174

Diego Salas-Solano, Bernal Rodríguez-Herrera

引用次数: 0