Population density and small-scale variation in habitat quality affect phenotypic quality in roe deer

Oecologia ◽  
2001 ◽  
Vol 128 (3) ◽  
pp. 400-405 ◽  
Author(s):  
Nathalie Pettorelli ◽  
Jean-Michel Gaillard ◽  
Patrick Duncan ◽  
Jean-Pierre Ouellet ◽  
Guy Van Laere
Keyword(s):  
Population Density ◽  
Habitat Quality ◽  
Roe Deer ◽  
Small Scale ◽  
Phenotypic Quality ◽  
Scale Variation

scholarly journals Variations in adult body mass in roe deer: the effects of population density at birth and of habitat quality

2002 ◽  
Vol 269 (1492) ◽  
pp. 747-753 ◽  
Author(s):  
Nathalie Pettorelli ◽  
Jean-Michel Gaillard ◽  
Guy Van Laere ◽  
Patrick Duncan ◽  
Petter Kjellander ◽  
...  
Keyword(s):  
Population Density ◽  
Body Mass ◽  
Habitat Quality ◽  
Roe Deer ◽  
Adult Body Mass ◽  
Adult Body

scholarly journals Fine-scale interactions between habitat quality and genetic variation suggest an impact of grazing on the critically endangered Crau Plain grasshopper (Pamphagidae: Prionotropis rhodanica)

2018 ◽  
Vol 27 (1) ◽  
pp. 61-73 ◽  
Author(s):  
Sylvain Piry ◽  
Karine Berthier ◽  
Réjane Streiff ◽  
Sandrine Cros-Arteil ◽  
Laurent Tatin ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Population Density ◽  
Habitat Quality ◽  
Spatial Genetic Structure ◽  
Spatial Scales ◽  
Critically Endangered ◽  
Dispersal Ability ◽  
Small Scale ◽  
Fine Scale ◽  
Grasshopper Species

The Crau Plain grasshopper, Prionotropisrhodanica Uvarov, 1923 (Orthoptera: Pamphagidae: Thrinchinae), is a rare grasshopper species endemic to the Crau Plain, a steppic habitat in France with unique floristic and faunistic communities. During recent decades, the area covered by these steppic grasslands has been highly reduced and fragmented due to the development of irrigation-based agriculture, roads, as well as industrial and military complexes. The restricted distribution, low population density and poor dispersal ability of P.rhodanica, combined with the destruction of its habitat, has led to the classification of this species as critically endangered in the IUCN Red List of Threatened Species. Decreases in habitat quality due to intensive grazing in the remnant grassland patches constitute an additional threat for P.rhodanica that can impact population dynamics at a relatively small-scale. In this work, we focused on a small area of about 3 km2 occupied by one of the largest subpopulations observed in 2000–2001. We conducted a single-time snapshot intensive survey of grasshopper density and genetic variation at 11 microsatellite markers. We used a recent method, MAPI, to visualize the spatial genetic structure as a continuous surface and to determine, with the simultaneous use of spatial cross-correlograms, whether the normalized difference vegetation index, which informs on the balance between vegetation productivity and grazing intensity, can explain grasshopper population structure at such a fine scale. We found that both population density and gene flow were strongly and positively correlated to habitat quality (higher productivity of grasslands and/or lower sheep grazing). The spatial scales of interaction between these variables were estimated to be highly similar, in the range of 812–880 meters. This result suggests that P.rhodanica is very sensitive to the quality of the grasslands it inhabits.

scholarly journals How small-scale variation in oyster reef patchiness influences predation on bivalves

2011 ◽  
Vol 429 ◽  
pp. 87-91 ◽  
Author(s):  
PI Macreadie ◽  
NR Geraldi ◽  
CH Peterson
Keyword(s):  
Oyster Reef ◽  
Small Scale ◽  
Scale Variation

Small-scale variation in herbivore abundance and grazing on Juncus roemerianus dominated salt marshes

2020 ◽  
Vol 28 (6) ◽  
pp. 983-991
Author(s):  
Jessica Carrier ◽  
Eric L. Sparks ◽  
Mark S. Woodrey ◽  
Just Cebrian ◽  
Anne Boettcher
Keyword(s):  
Salt Marshes ◽  
Juncus Roemerianus ◽  
Small Scale ◽  
Scale Variation

scholarly journals Estimating Changes in Habitat Quality through Land-Use Predictions: Case Study of Roe Deer (Capreolus pygargus tianschanicus) in Jeju Island

2020 ◽  
Vol 12 (23) ◽  
pp. 10123
Author(s):  
Dong-jin Lee ◽  
Seong Woo Jeon
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Protected Areas ◽  
Habitat Quality ◽  
Green Infrastructure ◽  
Roe Deer ◽  
Land Use Changes ◽  
Jeju Island ◽  
Invest Model ◽  
Integrated Valuation

This study predicts future land-use changes and the resulting changes in habitat quality, suggesting a method for establishing land-use management to ensure sustainable wildlife habitats. The conservation effects were verified in terms of wild animal habitat quality according to the designation of protected areas. Land-use change until 2050 was predicted using the Dyna-Conversion of Land Use Change and its effects (Dyna-CLUE) model for Jeju Island, Korea, and the change in the quality of roe deer habitats was predicted using the Integrated Valuation and Environmental Services and Tradeoffs (InVEST) model. Results indicate that, compared to 2030, urbanized area increased by 42.55 km2, farmland decreased by 81.36 km2, and natural area increased by 38.82 km2 by 2050. The average habitat quality on Jeju Island was predicted to decrease from 0.306 in 2030 to 0.303 in 2050. The average habitat quality ranged from 0.477 in 2030 to 0.476 in 2050 in protected areas and 0.281 in 2030 to 0.278 in 2050 outside protected areas. Habitat quality in protected areas was relatively high, and its reduction was limited. Areas with lower habitat quality need approaches such as expanding greenery and improving its quality. By establishing appropriate land-use plans by predicting habitat quality, wildlife habitats can be better maintained and protected, which is a primary goal of green infrastructure.

scholarly journals Population density and sex do not influence fine-scale natal dispersal in roe deer

2008 ◽  
Vol 275 (1646) ◽  
pp. 2025-2030 ◽  
Author(s):  
J.-M Gaillard ◽  
A.J.M Hewison ◽  
P Kjellander ◽  
N Pettorelli ◽  
C Bonenfant ◽  
...  
Keyword(s):  
Population Density ◽  
Roe Deer ◽  
Natal Dispersal ◽  
Fine Scale
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