Habitat and population structure determine patterns of plant-pollinator networks of an endangered palm tree in a grassland-forest ecotone DOI Creative Commons
Mateus Raguse-Quadros,

Gabriela da Cunha Souza,

Pedro Maria Abreu Ferreira

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: June 27, 2023

Abstract Pollen transport by insects determines patterns of reproductive encounters between plants with flowers that have spatially or temporally segregated sexes. Pollinators show varied responses to environmental gradients such as those found in grassland-forest ecotones. Individual-based interaction networks are useful yet underexplored tools understand how interactions vary across these gradients. Interactions plant individuals and their pollinators directly reflect on fitness genetic structure, seminal attributes for the conservation endangered species. To test a ecotone gradient can affect we studied pollination Butia odorata individuals, an extinction-threatened palm tree from remnant grove ecosystems South America. We evaluated network metrics (specialization modularity), pollinator richness respond habitat population structure ecotone. Networks more isolated trees showed greater specialization modularity. Pollinator was dependent context role: peripheral were negatively affected density, whereas core positively cover, which turn associated density proximity forest. Our results indicated increased cover grassland matrix promote diversity decreasing dominance Palm may hamper movement pollen transportation, playing key role B. ecosystems. Finally, emphasize need protocols include traditional management achieve maximizes results.

Language: Английский

Woody encroachment and leaf functional traits of ground-layer savanna species DOI
Paulo Ivo Homem de Bittencourt, Luiz Felipe Souza Pinheiro, Davi Rodrigo Rossatto

et al.

Flora, Journal Year: 2025, Volume and Issue: unknown, P. 152709 - 152709

Published: March 1, 2025

Language: Английский

Citations

0
Woody plant encroachment drives population declines in 20% of common open ecosystem bird species DOI
Joseph D. White, Nicola Stevens, Jolene T. Fisher

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(6)

Published: June 1, 2024

Abstract Grassy ecosystems cover more than 40% of the world's terrestrial surface, supporting crucial ecosystem services and unique biodiversity. These have experienced major losses from conversion to agriculture with remaining fragments threatened by global change. Woody plant encroachment, increase in woody threatening grassy ecosystems, is a change symptom, shifting composition, structure, function communities concomitant effects on all To identify generalisable impacts encroachment biodiversity, we urgently need broad‐scale studies how species respond Here, make use bird atlas, data (between 2007 2016) traits, assess: (1) population trends responses using dynamic occupancy models; (2) outcomes relate habitat, diet nesting traits; (3) predictions future trends, for 191 abundant, southern African species. We found that: 63% (121) showed decline occupancy, 18% (34) species' declines correlated increasing (i.e. losers). Only 2% (4) linked increased winners); Open habitat specialist, invertivorous, ground birds were most frequent losers, however, no definitive evidence that selected traits could predict outcomes; open loser will take average 52 years experience 50% current rates encroachment. Our results bring attention concerning region‐wide declining highlight as an important driver dynamics. Importantly, these findings should encourage improved management restoration our ecosystems. Furthermore, show importance lands beyond protected areas urgent mitigate

Language: Английский

Citations

3
Ecologia e conservação da vegetação de Cerrado às margens de rodovias DOI Creative Commons

M. S. P. Paula

Published: Jan. 12, 2024

state authorities.We advocate for the conservation significance of these habitats and implementation a Roadside Vegetation Management, strategy that could provide framework preserving areas, particularly against illegal activities improper management practices.

Language: Английский

Citations

0
Leaf functional traits of Daphniphyllum macropodum across different altitudes in Mao’er Mountain in Southern China DOI Creative Commons
Zhangting Chen, Qiaoyu Li,

Zhaokun Jiang

et al.

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 7

Published: July 17, 2024

Investigating functional traits among mountain species with differing altitude requirements is integral to effective conservation practices. Our study aims investigate the structural and chemical characteristics of Daphniphyllum macropodum leaves at three altitudes (1100 m, 1300 1500 m) across southern China provide insight into changes in leaf (LFT) as well plant adaptations response changing environmental conditions. Leaf include thickness (LT), area (LA), specific (SLA), tissue density (LD), respectively, while properties carbon-nitrogen-phosphorus (C:N:P) contents ratios, such C/N, C/P, N/P. findings demonstrated significant effect on both (LT, SLA, LD) aspects (N, N/P) LFT. In particular, 1100 m differed greatly, having lower SLA values than m. Observable trends included an initial increase followed by a decline rose. Notable them were LT, LD, N, N/P locations. Traits significantly higher m; C/N displayed inverse trend, their lowest occurring Furthermore, this research various degrees variation LFT, exhibiting greater fluctuation traits. Robust correlations observed certain traits, SLA. interdependency relationships between N P interconnectedness. Redundancy analysis indicated that soil factors, specifically content, exerted strongest impact At D. employed acquisition strategies; however, strategies emerged, showing shift from conservative ones.

Language: Английский

Citations

0
Tree cover and palm population structure determine patterns of palm-pollinator interaction networks in a grassland-forest ecotone DOI Creative Commons
Mateus Raguse-Quadros, Pedro Maria Abreu Ferreira, Gabriela Chesim de Souza

et al.

Anais da Academia Brasileira de Ciências, Journal Year: 2024, Volume and Issue: 96(4)

Published: Jan. 1, 2024

Pollen dispersal by insects determines the patterns of reproductive encounters between plants with flowers that have spatially or temporally segregated sexes. Pollinators exhibit varied responses to environmental gradients, such as those in grassland-forest ecotones. Individual-based interaction networks are useful yet underexplored tools understand how interactions vary across these gradients. To test a ecotone gradient affects interactions, we studied pollination Butia odorata individuals, key palm tree species threatened South American grassland ecosystem. We assessed, through Structural Equation Models (SEMs), network metrics (specialization and modularity) pollinator richness abundance (total, peripheral, core) respond gradients habitat population structure ecotone. Networks more isolated palms showed greater specialization modularity. Pollinator was dependent on context role. The peripheral pollinators were negatively affected density. core positively cover, which, turn, associated density proximity forest. Our results suggest can modulate presence pollinators, while increased cover matrix promote diversity decreasing dominance species.

Language: Английский

Citations

0
Habitat and population structure determine patterns of plant-pollinator networks of an endangered palm tree in a grassland-forest ecotone DOI Creative Commons
Mateus Raguse-Quadros,

Gabriela da Cunha Souza,

Pedro Maria Abreu Ferreira

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: June 27, 2023

Abstract Pollen transport by insects determines patterns of reproductive encounters between plants with flowers that have spatially or temporally segregated sexes. Pollinators show varied responses to environmental gradients such as those found in grassland-forest ecotones. Individual-based interaction networks are useful yet underexplored tools understand how interactions vary across these gradients. Interactions plant individuals and their pollinators directly reflect on fitness genetic structure, seminal attributes for the conservation endangered species. To test a ecotone gradient can affect we studied pollination Butia odorata individuals, an extinction-threatened palm tree from remnant grove ecosystems South America. We evaluated network metrics (specialization modularity), pollinator richness respond habitat population structure ecotone. Networks more isolated trees showed greater specialization modularity. Pollinator was dependent context role: peripheral were negatively affected density, whereas core positively cover, which turn associated density proximity forest. Our results indicated increased cover grassland matrix promote diversity decreasing dominance Palm may hamper movement pollen transportation, playing key role B. ecosystems. Finally, emphasize need protocols include traditional management achieve maximizes results.

Language: Английский

Citations

0