Species-Area Relationships of Specialist Versus Opportunistic Pampas Grassland Birds Depend on the Surrounding Landscape Matrix

Pretelli, Matías G.; Isacch, Juan Pablo; Cardoni, Daniel Augusto

doi:10.13157/arla.65.1.2018.ra1

Cited by 19 publications

(16 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The surrounding landscape matrix influences the responses of species in habitat fragments (Pretelli et al, 2018), and responses to landscape attributes provide information about improvements in habitat management (Kroll et al, 2014). Increasing the amount of native vegetation may provide additional habitat and can be considered a key driver of species richness (Lindenmayer et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies have found a significant positive relationship between bird species diversity and the amount of native vegetation in the landscape surrounding the patch of habitat where they occur (e.g., Haire et al, 2000;Lindenmayer et al, 2010;Wentworth et al, 2010). Landscapes with large areas of continuous grasslands significantly enhance the richness and abundance of grassland-specialist birds (Codesido et al, 2013;Pretelli et al, 2018). Therefore, the surrounding context has been considered a more important issue than assessing the patch size and degree of isolation (Collinge et al, 2003;Lindenmayer et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Grasslands have been replaced and fragmented due to changes in land use, mainly agricultural expansion (Pretelli et al, 2018). Restoration of degraded habitats, i.e., recovery of an ecosystem, is still not widely used for tropical and subtropical grasslands (Buisson et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Remnants of Native Vegetation Surrounding Do Not Affect the Diversity and Density of Birds in Brazilian Grassland-Restoration Sites

Silva

Fontana

2021

Front. Ecol. Evol.

View full text Add to dashboard Cite

Since in general the surrounding landscape influences the species diversity and abundance in fragments of native vegetation, an amount of native-vegetation cover nearby may also positively affect communities in restored areas, regardless of the sizes of individual habitat patches. We investigated for the first time whether the species richness, total abundance, and density of grassland birds in restoration sites are influenced by the amount of native grassland in the surrounding landscape in the Brazilian Pampa. We sampled birds by point counts in five restoration sites in the most representative area of grasslands in Brazil. We established an outer buffer zone with a 1 km-radius around the point-count areas in each site, and calculated the percentage of native grassland vegetation in the surrounding landscape. Bird species richness and abundance did not show a significant response to the amount of neighboring native grassland in restored areas. Individual analyses of the density of seven bird species associated to grassland also showed similar pattern. We believe the vegetation structure in these restoration sites may already been sufficiently re-established to provide necessary resources and a suitable habitat for the birds. Even so, we assume that previously existing landscape features were important for recovery of the vegetation structure, as continuous native grassland in the surroundings. Thus, we recommend consider the landscape context as an additional issue in studies dealing with conservation strategies for recovery of grasslands in Brazil.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Remnants of Native Vegetation Surrounding Do Not Affect the Diversity and Density of Birds in Brazilian Grassland-Restoration Sites

Silva

Fontana

2021

Front. Ecol. Evol.

View full text Add to dashboard Cite

show abstract

“…Historic ones are presumed to often derive from ancient migratory routes of wildlife (Manzano Baena & Casas, 2010) Drove roads have been observed to have a strong effect in increasing multifunctionality of the landscape by working as linear grasslands and increasing heterogeneity at the large scale, translating into an increase of biodiversity in diverse taxonomic groups such as plants (Azcárate et al, 2013a), ants (Azcárate et al, 2013b; Hevia et al, 2013) or even bees, linked with important pollination services (Hevia et al, 2016). Given the proven capacity of livestock in achieving long-distance dispersal along drove roads, both by endozoochory (Manzano, Malo & Peco, 2005) and by epizoochory (Manzano & Malo, 2006), mobile pastoralism taking place in drove roads could potentially mitigate the consequences of population isolation, which is a major outcome of fragmentation processes (Fahrig, 2003; Mitchell et al, 2015), especially in a grassland context (Pretelli, Isacch & Cardoni, 2018).…”

Section: Introductionmentioning

confidence: 99%

Herbivore corridors sustain genetic footprint in plant populations: a case for Spanish drove roads

García‐Fernández

Manzano

Seoane

et al. 2019

PeerJ

View full text Add to dashboard Cite

Habitat fragmentation is one of the greatest threats to biodiversity conservation and ecosystem productivity mediated by direct human impact. Its consequences include genetic depauperation, comprising phenomena such as inbreeding depression or reduction in genetic diversity. While the capacity of wild and domestic herbivores to sustain long-distance seed dispersal has been proven, the impact of herbivore corridors in plant population genetics remains to be observed. We conducted this study in the Conquense Drove Road in Spain, where sustained use by livestock over centuries has involved transhumant herds passing twice a year en route to winter and summer pastures. We compared genetic diversity and inbreeding coefficients of Plantago lagopus populations along the drove road with populations in the surrounding agricultural matrix, at varying distances from human settlements. We observed significant differences in coefficients of inbreeding between the drove road and the agricultural matrix, as well as significant trends indicative of higher genetic diversity and population nestedness around human settlements. Trends for higher genetic diversity along drove roads may be present, although they were only marginally significant due to the available sample size. Our results illustrate a functional landscape with human settlements as dispersal hotspots, while the findings along the drove road confirm its role as a pollinator reservoir observed in other studies. Drove roads may possibly also function as linear structures that facilitate long-distance dispersal across the agricultural matrix, while local P. lagopus populations depend rather on short-distance seed dispersal. These results highlight the role of herbivore corridors for conserving the migration capacity of plants, and contribute towards understanding the role of seed dispersal and the spread of invasive species related to human activities.

show abstract

“…Historic ones are presumed to often derive from ancient migratory routes of wildlife (Manzano Baena & Casas 2010) Drove roads have been observed to have a strong effect in increasing multifunctionality of the landscape by working as linear grasslands and increasing heterogeneity at the large scale, translating into an increase of biodiversity in diverse taxonomic groups such as plants (Azcárate et al 2013a), ants (Azcárate et al 2013b;Hevia et al 2013) or even bees, linked with important pollination services (Hevia et al 2016). Given the proven capacity of livestock in achieving long-distance dispersal along drove roads, both by endozoochory (Manzano et al 2005) and by epizoochory (Manzano & Malo 2006), mobile pastoralism taking place in drove roads could potentially mitigate the consequences of population isolation, which is a major outcome of fragmentation processes (Fahrig 2003;Mitchell et al 2015), especially in a grassland context (Pretelli et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Peer Review #2 of "Herbivore corridors sustain genetic footprint in plant populations: a case for Spanish drove roads (v0.2)"

Castilla¹

2019

View full text Add to dashboard Cite

Habitat fragmentation is one of the greatest threats to biodiversity conservation and ecosystem productivity that are mediated by direct human impact. Its consequences include genetic depauperation, comprising phenomena such as inbreeding depression or reduction in genetic diversity. While the capacity of wild and domestic herbivores to sustain long-distance dispersal has been proven, the impact of herbivore corridors in plant population genetics remains to be observed. We conducted this study in the Conquense Drove Road in Spain, with a sustained use by livestock during centuries where transiting herds passed by twice a year en route to winter and summer pastures. We compared genetic diversity and inbreeding coefficients of Plantago lagopus populations in the drove road with populations in the surrounding agricultural matrix, at varying distances from human settlements. We observed significant differences for coefficients of inbreeding between the drove road and the agricultural matrix, as well as significant trends for higher genetic diversity and population nestedness around human settlements. Trends for higher genetic diversity in drove roads may be present, although they were only marginally significant with the available sample size. The resulting functional landscape has human settlements as dispersal hotspots, while the drove road would confirm its pollinator reservoir role observed in other studies, and possibly also as a linear structure facilitating long-distance dispersal in an agricultural matrix where local P. lagopus populations depend rather on short-distance dispersal. These results highlight the role of herbivore corridors for conserving the migration capacity of plants, and they contribute as well in understanding the role of dispersal related to human activities for the spread of invasive species.

show abstract

Species-Area Relationships of Specialist Versus Opportunistic Pampas Grassland Birds Depend on the Surrounding Landscape Matrix

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 19 publications

References 46 publications

Remnants of Native Vegetation Surrounding Do Not Affect the Diversity and Density of Birds in Brazilian Grassland-Restoration Sites

Remnants of Native Vegetation Surrounding Do Not Affect the Diversity and Density of Birds in Brazilian Grassland-Restoration Sites

Herbivore corridors sustain genetic footprint in plant populations: a case for Spanish drove roads

Peer Review #2 of "Herbivore corridors sustain genetic footprint in plant populations: a case for Spanish drove roads (v0.2)"

Contact Info

Product

Resources

About