Insect community reassembly in a spatiotemporally heterogenous restoration landscape

Landscape Ecology, Journal Year: 2023, Volume and Issue: 38(11), P. 2763 - 2778

Published: Aug. 8, 2023

Abstract Context Anthropogenic habitat degradation resulting from agricultural, mining, and urban development is a leading cause of global insect declines, but the recovery communities functional guilds rarely assessed during ecological restoration. Objectives Assess effects vegetation community composition structure on species richness, diversity, abundance across various stages restoration to understand patterns drivers return post-mining landscapes. Methods We sampled using ultraviolet polypropylene vane traps conducted floristic surveys quantify relationships between 40-year sequence in south-western Western Australia. Results Despite lack convergence observed community, insects returned through natural processes reassembly dispersal such that resembled reference forest within approximately decade activity. However, transitioned an assemblage dominated by pollinators one herbivores detritivores along age gradient. Our results indicate plant had significant effect parasitoids metrics other were relatively weak. Conclusions Insect present complex variable responses re-assembly maximising landscape spatiotemporal heterogeneity complexity can increase availability suitable for diverse suite taxa associated services they provide.

Language: Английский

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Restoring marine ecosystems: Spatial reef configuration triggers taxon‐specific responses among early colonizers

Journal of Applied Ecology, Journal Year: 2021, Volume and Issue: 58(12), P. 2936 - 2950

Published: Sept. 3, 2021

Abstract The longstanding debate in conservation biology on the importance of single large or several small (SLOSS) habitats for preserving biodiversity remains highly relevant, given ongoing degradation and loss natural world‐wide. Restoration efforts are often constrained by limited resources, insights from SLOSS studies therefore have important implications if restoration can be optimized manipulating spatial configuration restored habitats. Yet, relevance habitat largely unexplored. Here, we report effects reef early colonization marine organisms after restoring boulder Reefs were (SL) (SS) designs western Baltic Sea, where century‐long extraction has severely degraded areas likely exacerbated regional declines commercially gadoids ( Gadidae spp.). We sampled field sites using remote underwater video systems a before‐after control‐impact (BACI) design obtained probabilistic inferences Bayesian hierarchical models. Probabilities positive effect high (>95%) gadoids, labrids demersal gobies, moderate (60%–75%) species richness sand low (<5%) flatfish abundance. Notably, gadoid abundance increased 60‐fold 129‐fold average at SL SS respectively. composition reefs deviated control sites, mainly driven large‐bodied piscivores. Spatial had strongest small‐bodied mesopredators, including which more abundant driving distinct assemblages between designs. In addition to providing suitable conditions species, results suggest that also benefit soft‐bottom taxa, possibly through dispersed predator‐mediated relative SL. Synthesis applications . This study demonstrates strongly promote exploited (e.g. Atlantic cod) is promising management tool support top‐down controls predatory fishes systems. higher mesopredators with ‘several small’ suggests dilemma could long‐term trophic structure resilience habitats, should become an facet within strategies.

Language: Английский

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Bioindicadores para avaliação e monitoramento da restauração ecológica de área em ambiente de mineração de bauxita, Miraí, MG

Published: July 9, 2021

Este estudo teve como objetivos avaliar a restauração florestal, comparar técnicas de nucleação e apresentar novas perspectivas para o monitoramento da fauna uma área no ambiente mineração bauxita, em Miraí-MG. Para isso, foram avaliados adubação verde na recuperação do solo, florística, fitossociologia fauna, após 4 anos implantação projeto restauração. O foi realizado 2 ha, qual funcionava setor administrativo Companhia Brasileira Alumínio – CBA, que todas as construções removidas deixando subsolo exposto, compactado baixa fertilidade. Esta incluída programa compensação ambiental empresa. Assim, preparo solo com ripper, química ecológica. A cobertura produção fitomassa dos adubos verdes avaliadas ao final 18 meses. Os atributos três épocas (0, 24 meses semeadura). avaliação composição florística estrutura fitossociológica vegetação, inventário florestal tipo censo total, identificação todos os indivíduos CAP≥ 10 cm. Foram calculados parâmetros densidade relativa, dominância relativa valor índices diversidade comunidade vegetal (Shannon Equabilidade Pielou). No tocante à comparação nucleação, alocadas 40 parcelas 1 x m, nas quais testados quatro tratamentos (Transposição banco sementes serapilheira; Semeadura direta espécies arbóreas nativas; Poleiros artificiais Regeneração natural). Quanto instaladas armadilhas fotográficas monitorar vida selvagem (janeiro/2020 - janeiro/2021). As câmeras ficaram ativas programadas capturar imagens horas por dia, qualquer movimento. Além disso, método busca ativa animais pertencentes classes: Amphibia, Reptilia, Aves Mammalia. Como resultados, constatou-se rápido recobrimento promovido pelos garantiu proteção contra eventuais processos erosivos evitou invasão gramíneas exóticas agressivas, propiciando melhores condições mudas plantadas. deposição colaborou aumento teores matéria orgânica fertilidade tratamentos. De acordo fitossociológico, é floristicamente heterogênea, ecológica apresentou similaridade outros estudos realizados região. conhecimento funcionais das essencial planejamento execução projetos permite definir metodologias mais adequadas cada cenário. entre áreas bauxita influenciada principalmente pela localização geográfica, técnica idade áreas. às semeadura transposição serapilheira se destacaram alternativas Cabe destacar necessidade adaptar essas aos múltiplos filtros ambientais regionais características ecológicas paisagens modo aproveitar resiliência ambiente. forneceram abordagem inovadora contexto relação fauna-flora aspectos ecologia comportamental espécies. presença diferentes classes, níveis tróficos padrões sociabilidade indica medida processo sucessional avance, espera-se aumente complexidade interações intraespecíficas interespecíficas. pode-se concluir ecológica, ações conservação realizadas empresa, bem preservação fragmentos florestais, têm mostrado eficientes desempenham um papel importante biodiversidade regional. Palavras-chave: Adubação verde. Mineração sustentável. Monitoramento fauna. Nucleação. Restauração florestal. Técnicas alternativas.

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The Influence of Management Practice on the Snakes in Forest Food Webs

Herpetological Monographs, Journal Year: 2024, Volume and Issue: 38(1)

Published: July 4, 2024

Anthropogenic activities in disturbance-mediated ecosystems might affect certain ecological processes that, turn, can the stability and resilience of those ecosystems. In upland pine forests, land-use practices such as intensive silviculture fire suppression have contributed to loss diversity-rich savannahs throughout southeast. Whereas application management strategies has been shown alter forest structure ecosystems, less is known about how these efforts influence pathways energy flow consumer–resource relationships therein. Here, we investigated effects frequency on trophic resource use snake communities two forests under high low frequencies (i.e., shorter return intervals thinning versus longer limited thinning). We sampled snakes, prey, dominant basal resources across each site for three summers from 2018 2020. Using stable isotope analysis, compared community-wide metrics generated isotopic mixing models determine relative contribution consumers. found that high-frequency supported an increased diversity species, species exhibited redundancy. The low-frequency fewer relied a wider range resources, occupied tropic positions. Mixing relationships, prey abundance, indicated snakes were more generalized their site, utilized broader evenly. contrast, specialized use. suggest anthropogenic mimicking natural disturbances drive food-web Increased prescribed fires operations support while also increasing Consequently, applications lead greater pine-forest Our research further highlights importance restoration incorporates perspectives ensure health

Language: Английский

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The need for an evidence-led approach to rewilding

Journal for Nature Conservation, Journal Year: 2024, Volume and Issue: 79, P. 126609 - 126609

Published: March 27, 2024

Language: Английский

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