Land use and river-lake connectivity: Biodiversity determinants of lake ecosystems

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 21, P. 100434 - 100434

Published: May 28, 2024

Lake ecosystems confront escalating challenges to their stability and resilience, most intuitively leading biodiversity loss, necessitating effective preservation strategies safeguard aquatic environments. However, the complexity of ecological processes governing lake under multi-stressor interactions remains an ongoing concern, primarily due insufficient long-term bioindicator data, particularly concerning macroinvertebrate biodiversity. Here we utilize a unique, continuous, in situ biomonitoring dataset spanning from 2011 2019 investigate spatio-temporal variation communities. We assess impact four crucial environmental parameters on Dongting Taihu, i.e., water quality, hydrology, climate change, land use. These two systems are representative lakes with Yangtze-connected disconnected subtropical floodplains China. find alarming trend declining taxonomic functional diversities among communities despite improvements quality. Primary contributing factors this decline include persistent anthropogenic pressures, alterations human use around lakes, including intensified nutrient loads reduced habitat heterogeneity. Notably, river-lake connectivity is pivotal shaping differential responses multiple stressors. Our results highlight strong correlation between within 2–5 km radius 0.05–2.5 shorelines Lakes respectively. findings importance implementing buffer zones specific spatial scales enhance diversity, securing essential ecosystem services enhancing resilience ecosystems.

Language: Английский

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Landscape perspectives for agroecological weed management. A review

Agronomy for Sustainable Development, Journal Year: 2024, Volume and Issue: 44(1)

Published: Jan. 25, 2024

Abstract Faced with the biodiversity extinction crisis and climate change, alternative approaches to food production are urgently needed. Decades of chemical-based weed control have resulted in a dramatic decline diversity, negative repercussions for agroecosystem biodiversity. The simplification cropping systems evolution herbicide resistance led dominance small number competitive species, calling more sustainable approach that considers not only abundance but also community diversity composition. Agroecological management involves harnessing ecological processes minimize impacts weeds on productivity maximize However, current research effort agroecological is largely rooted agronomy field-scale farming practices. In contrast, contributions landscape-scale interventions unexplored (e.g., promote pollinators natural enemies or carbon sequestration). Here, we review knowledge landscape effects properties (abundance, composition) seed predation (a key factor management). Furthermore, discuss underlying effects, their interaction in-field approaches, implications change management. Notably, found (1) context rarely affects total abundance; (2) configurational than compositional heterogeneity landscapes associated higher alpha, beta, gamma diversity; (3) evidence currently limited; (4) plant spillover from neighboring habitats most common interpretation properties, whereas many other overlooked. Strikingly, drivers biological regulation at scale remain poorly understood. We recommend addressing these issues better integrate into management, which could inform movement towards managing farms wider spatiotemporal scales single fields season.

Language: Английский

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Land‐use intensity influences European tetrapod food webs

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(2)

Published: Feb. 1, 2024

Abstract Land use intensification favours particular trophic groups which can induce architectural changes in food webs. These impact ecosystem functions, services, stability and resilience. However, the imprint of land management intensity on food‐web architecture has rarely been characterized across large spatial extent various uses. We investigated influence six facets architecture, namely apex basal species proportions, connectance, omnivory, chain lengths compartmentalization, for 67,051 European terrestrial vertebrate communities. also assessed dependency this climate. In addition to more commonly considered climatic factors, webs was notably influenced by intensity. Intensification tended strongly lower proportion predators consistently contexts. general, proportions species, favoured mesopredators, decreased compartmentalization whereas it increased their connectance. response different some sharply connectance Mediterranean Alpine settlements, tetrapod forest Atlantic croplands. Besides, intensive urbanization especially longer chains omnivory. By favouring mesopredators most contexts, could undermine tetrapods, cascading effects need be assessed. Our results support importance protecting top where possible raise questions about long‐term face human‐induced pressures.

Language: Английский

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Priorities for conserving the world’s terrestrial mammals based on over-the-horizon extinction risk

Current Biology, Journal Year: 2023, Volume and Issue: 33(7), P. 1381 - 1388.e6

Published: April 1, 2023

Language: Английский

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Land-use change interacts with island biogeography to alter bird community assembly

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2018)

Published: March 13, 2024

Anthropogenic activities have reshaped biodiversity on islands worldwide. However, it remains unclear how island attributes and land-use change interactively shape multiple facets of through community assembly processes. To answer this, we conducted bird surveys in various types (mainly forest farmland) using transects 34 oceanic land-bridge the largest archipelago China. We found that species richness increased with area decreased isolation, regardless intensity change. forest-dominated habitats exhibited lower than farmland-dominated habitats. Island assemblages generally comprised share more similar traits or evolutionary histories (i.e. functional and/or phylogenetic clustering) expected if were randomly assembled. Contrary to our expectations, observed clustered large close islands, whereas small islands. These contrasting results indicate interacts biogeography alter birds inhabited Our findings emphasize importance incorporating human-modified when examining biota, further suggest agricultural landscapes may play essential roles protecting countryside biodiversity.

Language: Английский

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Anthropogenic impacts on multiple facets of macroinvertebrate α and β diversity in a large river-floodplain ecosystem

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 874, P. 162387 - 162387

Published: Feb. 25, 2023

Language: Английский

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Assessing the global vulnerability of dryland birds to heatwaves

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(1)

Published: Jan. 1, 2024

Abstract As global average surface temperature increases, extreme climatic events such as heatwaves are becoming more frequent and intense, which can drive biodiversity responses rapid population declines and/or shifts in species distributions even local extirpations. However, the impacts of largely ignored conservation plans. Birds known to be susceptible heatwaves, especially dryland ecosystems. Understanding birds most vulnerable where these occur, offer a scientific basis for adaptive management conservation. We assessed relative vulnerability 1196 bird using trait‐based approach. Among them, 888 estimated (170 highly vulnerable, eight extremely vulnerable), ~91% currently considered non‐threatened by IUCN, suggests that many will likely become newly threatened with intensifying climate change. identified top three hotspot areas heatwave‐vulnerable Australia (208 species), Southern Africa (125 species) Eastern (99 species). Populations recorded Living Planet Database were found declining significantly faster than those non‐vulnerable ( p = .048) after occurred. In contrast, no significant difference trends between was detected when heatwave occurred .34). This our framework correctly already impacting species. Our findings help prioritize ecosystems risk mitigation adaptation frequency accelerates coming decades.

Language: Английский

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Global effects of forest modification on herpetofauna communities

Conservation Biology, Journal Year: 2022, Volume and Issue: 37(1)

Published: Sept. 8, 2022

As the area covered by human-modified environments grows, it is increasingly important to understand responses of communities novel habitats created, especially for sensitive and threatened taxa. We aimed improve understanding major evolutionary ecological processes that shape assemblage amphibian reptile forest modifications. To this end, we compiled a global data set surveys in natural, disturbed (burned, logged), transformed (monocultures, polyspecific plantations) assess richness, phylogenetic diversity, composition those communities, as well morphological disparity among taxa between natural modified habitats. Forest transformations led diversity reduction 15.46% relative statistically nonsignificant effect disturbances. Transformations also community was 39.4% dissimilar on forests, compared with 16.1% difference Modifications did not affect (p = 0.167 0.744), found little evidence taxon-specific anthropic impacts. Monocultures plantations detrimentally affected conservation value both altered shaping these whereas forests lower impact disturbances might, some extent, serve reservoirs species. Although different mechanisms might buffer collapse herpetological preserving remaining necessary conserving face future pressures.Con el aumento del área cubierta por entornos modificados humano, cada vez es más importante entender las respuestas que tienen comunidades los nuevos hábitats creados, especialmente en taxones sensibles y amenazados. El objetivo de este estudio mejorar conocimiento sobre principales procesos evolutivos ecológicos condicionan ensamblado anfibios reptiles ante modificaciones forestales. Con fin, compilamos un conjunto datos globales censos forestales naturales, perturbadas (taladas, incendiadas) transformadas (monocultivos, plantaciones poliespecíficas) para valorar la riqueza, diversidad filogenética composición aquellas comunidades, así como disparidad morfológica entre naturales modificados. Las transformaciones llevaron una reducción relación al efecto sin significancia estadística perturbaciones. también derivaron comunitaria fue diferente bosques comparación con diferencia no afectaron 0.744) encontramos suficiente evidencia específicas taxón impactos antrópicos. Los monocultivos poliespecíficas negativamente conservación valor ecológico alteraron estas mientras menos impactados podrían, hasta cierto punto, actuar reservorios especies. Sin embargo, diferentes mecanismos pueden amortiguar colapso herpetológicas, se requiere preservar enfrentarán presiones antrópicas.随着人为改造环境的覆盖面积增加, 了解群落如何响应人类创造的新生境也越来越重要, 特别是对于敏感和受威胁的类群来说。本研究旨在进一步理解塑造两栖动物和爬行动物群落响应森林改造的主要演化及生态过程。为此, 我们编制了一个全球两栖动物和爬行动物调查数据集, 在自然、受干扰 (烧毁、砍伐) 和改造 (单一种植、多品种种植) 的森林中, 评估这些群落的丰富性、系统发育多样性和组成, 以及类群在自然和改造的森林生境之间的形态差异。结果表明, 森林改造导致生物多样性减少15.46%, 而干扰的影响在统计学上并不显著。改造后森林的群落组成与自然森林的群落组成有39.4%的差异, 而受干扰森林的差异为16.1%。此外, 森林改造并不影响群落的形态差异 0.167和0.744), 我们没有发现类群特异的对人为影响的响应。单一种植和多物种种植对两栖动物和爬行动物群落的保护和生态价值都产生了不利影响, 并改变了形成这些群落的演化过程, 而受干扰影响较小的森林在某种程度上可能成为物种的储藏库。然而, 虽然可能存在不同机制来缓冲两栖及爬行动物群落的崩溃, 但面对未来的人为压力, 保护剩余的自然森林对于保护群落仍十分必要。【翻译: 胡怡思; 审校: 聂永刚】.

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Functional traits explain waterbirds' host status, subtype richness, and community‐level infection risk for avian influenza

Ecology Letters, Journal Year: 2023, Volume and Issue: 26(10), P. 1780 - 1791

Published: Aug. 16, 2023

Species functional traits can influence pathogen transmission processes, and consequently affect species' host status, diversity, community-level infection risk. We here investigated, for 143 European waterbird species, effects of on status diversity (subtype richness) avian influenza virus at species level. then explored the association between HPAI H5Nx occurrence community level 2016/17 2021/22 epidemics in Europe. found that both subtype richness were shaped by several traits, such as diet guild dispersal ability, community-weighted means these also correlated with risk occurrence. Moreover, divergence was negatively associated occurrence, indicating reduce Our findings highlight value integrating trait-based ecology into framework diversity-disease relationship, provide new insights prediction prevention.

Language: Английский

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Vulnerability of terrestrial vertebrate food webs to anthropogenic threats in Europe

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

Abstract Vertebrate species worldwide are currently facing significant declines in many populations. Although we have gained substantial knowledge about the direct threats that affect individual species, these only represent a fraction of broader vertebrate threat profile, which is also shaped by interactions. For example, faced prey can jeopardize survival their predators due to food resource scarcity. Yet, indirect arising from interactions received limited investigation thus far. In this study, investigate consequences anthropogenic on biodiversity context European webs. We integrated data trophic among over 800 terrestrial vertebrates, along with associated human‐induced threats. quantified and mapped vulnerability various components web, including interactions, groups six major threats: pollution, agricultural intensification, climate change, exploitation, urbanization, invasive alien diseases. Direct exploitation intensification were two for webs: affecting 34% 31% respectively, they threaten 85% 69% Europe. By integrating network ecology impact assessments, our study contributes better understanding magnitude impacts biodiversity.

Language: Английский

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