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  • 1
    Online Resource
    Online Resource
    Wiley ; 2018
    In:  Ecography Vol. 41, No. 9 ( 2018-09), p. 1520-1533
    In: Ecography, Wiley, Vol. 41, No. 9 ( 2018-09), p. 1520-1533
    Abstract: Biodiversity extinction thresholds are abrupt declines in biological diversity that occur with habitat loss, associated with a decline in habitat connectivity. Matrix quality should influence the location of thresholds along habitat loss gradients through its effects on connectivity; however these relationships have seldom been explored empirically. Using field data from 23 independent 1254 ha landscapes in the Brazilian Atlantic Forest, we evaluated how tropical avian biodiversity responds to native forest loss within habitat patches embedded either in homogeneous pasture matrix context (with a high proportion of cattle pastures), and heterogeneous coffee matrix context (with high abundance of sun coffee plantations). We considered taxonomic, functional, and phylogenetic diversity, and tested if matrix type and choice of diversity metric influenced the location of biodiversity thresholds along the forest cover gradient. We found that matrix type postponed the abrupt loss of taxonomic diversity, from a threshold of 35% of forest cover in homogeneous pasture matrix to 19% in heterogeneous coffee matrix. Phylogenetic diversity responded similarly, with thresholds at 30 and 24% in homogeneous‐pasture and heterogeneous‐coffee matrices, respectively, but no relationship with forest cover was detected when corrected for richness correlation. Despite the absence of a threshold for functional diversity in either matrix types, a strong decline below 20% of habitat amount was detected. Finally, below 20% native habitat loss, all diversity indices demonstrated abrupt declines, indicating that even higher‐quality matrices cannot postpone diversity loss below this critical threshold. These results highlight that taxonomic diversity is a more sensitive index of biodiversity loss in fragmented landscapes, which may be used as a benchmark to prevent subsequent functional and phylogenetic losses. Furthermore, increasing matrix quality appears an efficient conservation strategy to maintain higher biodiversity levels in fragmented landscapes over a larger range of habitat loss.
    Type of Medium: Online Resource
    ISSN: 0906-7590 , 1600-0587
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2018
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  • 2
    Online Resource
    Online Resource
    Wiley ; 2018
    In:  Journal of Applied Ecology Vol. 55, No. 3 ( 2018-05), p. 1252-1264
    In: Journal of Applied Ecology, Wiley, Vol. 55, No. 3 ( 2018-05), p. 1252-1264
    Abstract: We demonstrate that land use type is a key factor facilitating species spillover into agricultural matrices and that the influence of land use type on spillover is further modulated by a combination of native habitat amount and edge density. These results should be considered in efforts to design or manage sustainable agricultural landscapes in order to enhance both bird persistence and the provision of bird‐mediated ecosystem services.
    Type of Medium: Online Resource
    ISSN: 0021-8901 , 1365-2664
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2018
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  • 3
    In: Journal of Applied Ecology, Wiley, Vol. 58, No. 11 ( 2021-11), p. 2637-2649
    Abstract: Understanding the links between biological communities and ecosystem service provision through the mechanisms driven by landscape structure is crucial to promote management strategies that safeguard both biodiversity and provision of these services. Here, we assess the impact of landscape structure and matrix contrast on carrion removal by scavenger insects, an often overlooked ecosystem service but of paramount importance for nutrient cycling and disease control. We first hypothesize that more forested landscapes and less contrasting matrices harbour richer communities of scavenger insects, mainly composed of forest species. We then posit that these richer communities of scavenger insects promote a higher provision of the carrion removal service. The scavenger insect community and carrion removal service was surveyed using 18 independent paired sampling sites (forest‐agricultural matrix, composed either by coffee plantations or cattle pastures) in the Atlantic Brazilian Forest domain. We measured insect species richness, community composition and carrion removal amount using meat baits inside exclusion cages monitored along 6 days across a forest cover gradient (8%–89%) and distance gradient from forest edge (0–100 m to the interior of forest patches and adjacent matrix). Species richness of scavenger insects was higher in more fragmented landscapes, with more forested areas presenting communities composed of mainly forest‐associated species. Carrion in coffee plantations attracted richer communities than in cattle pastures or forests. Coffee plantations also presented communities with more forest‐associated species than cattle pastures. Carrion removal was higher in both forest and coffee plantations compared to cattle pastures. Even though forest communities had lower species richness, key forest‐associated groups were the bulk of a higher service provision. Synthesis and applications . Forested landscapes with less contrasting matrices maintain a higher provision of carrion removal service by sustaining communities composed of scavenger insects with higher carrion removal capacity—mostly forest‐associated species. Landscape management focusing on the conservation and reforestation of native forest patches, as well as reducing matrix contrast, could facilitate species spillover and thereby ensure the provision of carrion removal service.
    Type of Medium: Online Resource
    ISSN: 0021-8901 , 1365-2664
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2020408-5
    detail.hit.zdb_id: 410405-5
    SSG: 12
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  • 4
    In: Journal of Applied Ecology, Wiley, Vol. 59, No. 11 ( 2022-11), p. 2790-2802
    Abstract: A perda de habitat representa uma grande ameaça à biodiversidade, entretanto, entender como seus efeitos são modulados pela matriz (não‐habitat) ainda é subvalorizado. A matriz na paisagem pode mudar a montagem da comunidade de diferentes maneiras. Por exemplo, matrizes de baixa qualidade podem acentuar a filtragem ambiental de espécies por reduzir a disponibilidade de recursos e/ou deteriorar as condições abióticas, mas também podem limitar a dispersão de organismos e tornar as comunidades mais propensas à deriva ecológica. Para entender como a qualidade da matriz modula os efeitos da perda de habitat, quantificamos a importância relativa do filtro ambiental e da deriva ecológica nas comunidades de aves em diferentes escalas de perda de habitat em paisagens com matrizes de baixa e alta qualidade: escala mais locais (400 m de raio em torno dos pontos de amostragem) e mais ampla (2 km de raio ao redor do centro das paisagens focais). Utilizamos uma abordagem baseada em atributos das espécies para entender os efeitos da filtragem da perda de habitat sobre as ocorrências de aves especialistas e generalistas de habitat. Descobrimos que matrizes de baixa qualidade, compostas principalmente de pastagens de baixa produtividade, aumentaram a severidade dos efeitos de filtragem da perda de habitat para aves especializadas em florestas, mas apenas na escala da paisagem. As ocorrências de aves foram em geral mais elevadas em matrizes de alta qualidade, ou seja, mais heterogêneas e com bordas de baixo contraste, indicando o papel da qualidade da matriz na diminuição dos riscos de extinção de espécies na escala da paisagem, provavelmente devido ao efeito de massa ( mass effect ). Além disso, aves especialistas apresentaram uma forte resposta negativa à filtragem da perda de habitat através de diferentes atributos funcionais, enquanto aves generalistas apresentaram uma alta variabilidade na resposta dos atributos à perda de habitat. Síntese e aplicações : Nossos resultados apontam que a filtragem de espécies por perda de habitat na paisagem pode ser relaxada ou reforçada dependendo da qualidade da matriz, evidenciando que a qualidade da matriz tem um forte impacto na modulação dos processos de montagem da comunidade em paisagens fragmentadas. Em termos práticos, isso significa que a melhoria da qualidade da matriz pode ajudar a manter a alta diversidade das aves, mesmo sem qualquer aumento na cobertura florestal nativa.
    Type of Medium: Online Resource
    ISSN: 0021-8901 , 1365-2664
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
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    SSG: 12
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  • 5
    In: Ecosystem Services, Elsevier BV, Vol. 62 ( 2023-08), p. 101535-
    Type of Medium: Online Resource
    ISSN: 2212-0416
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2023
    detail.hit.zdb_id: 2681542-4
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  • 6
    In: Biological Conservation, Elsevier BV, Vol. 253 ( 2021-01), p. 108898-
    Type of Medium: Online Resource
    ISSN: 0006-3207
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1496231-7
    SSG: 12
    SSG: 23
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