Fine scale analysis of intraspecific and interspecific interactions in two varanid lizard populations adjacent to a sea turtle nesting beach

2018 ◽  
Vol 43 (8) ◽  
pp. 965-972 ◽  
Author(s):  
Juan Lei ◽  
David T. Booth
Keyword(s):  
Interspecific Interactions ◽  
Sea Turtle ◽  
Fine Scale ◽  
Scale Analysis

scholarly journals Fine scale analysis of shifts in bacterial community structure in the chemocline of meromictic Lake Cadagno, Switzerland

2009 ◽  
Vol 68 (1) ◽  
pp. 16 ◽  
Author(s):  
Paola M.A. DECRISTOPHORIS ◽  
Sandro PEDUZZI ◽  
Nadia RUGGERI-BERNARDI ◽  
Dittmar HAHN ◽  
Mauro TONOLLA
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Community Structure ◽  
Meromictic Lake ◽  
Fine Scale ◽  
Scale Analysis

Adequacies and deficiencies of alpine and subalpine treeline studies in the national parks of the western USA

2010 ◽  
Vol 35 (1) ◽  
pp. 19-42 ◽  
Author(s):  
Clayton J. Whitesides ◽  
David R. Butler
Keyword(s):  
Climate Change ◽  
Content Analysis ◽  
National Parks ◽  
Fine Scale ◽  
Scale Analysis ◽  
The West ◽  
Western Usa ◽  
Alpine Treeline ◽  
The Impact ◽  
Geomorphic Processes

To mitigate the impact of direct human activity on treeline pattern and process, much alpine treeline research in the western USA has been conducted in nationally protected areas. The use of treeline as a proxy for climate change has been assessed in parks throughout the west but often at the expense of geology or geomorphology as controls of treeline variation. The dissimilar geology and geomorphic processes of the western national parks suggest that treeline may respond differently between national parks when subjected to disturbance. Therefore, predicted vegetation response to disturbance across the western USA may provide a limited assessment of change beyond fine-scale analysis due to data collection from a limited number of national parks containing alpine treeline. We performed a content analysis on previous research that examined alpine treeline in national parks and classified each treeline study as anthropogenic, orographic/edaphic, or climatic according to the primary factor attributed to treeline control. Results indicated that the three types of treeline are not uniformly studied. Climatic treeline is most commonly studied whereas anthropogenic and orographic/edaphic studies are often lacking. Furthermore, several western national parks are entirely devoid of anthropogenic and orographic treeline research. Similar findings exist for treeline studies in protected places worldwide. More research in protected places is required to broaden our understanding of multiple treeline processes across both regional and worldwide extents.

A COMPREHENSIVE APPROACH TO OIL SPILL AND HURRICANE IMPACTS

1995 ◽  
Vol 1995 (1) ◽  
pp. 980-981 ◽  
Author(s):  
Karolien Debusschere ◽  
Dianne Lindstedt ◽  
Qiang Tao ◽  
Irving A. Mendelssohn ◽  
Qianxin Lin
Keyword(s):  
Land Cover ◽  
Oil Spill ◽  
Landscape Scale ◽  
Minimal Effect ◽  
Fine Scale ◽  
Scale Analysis ◽  
Vegetative Cover ◽  
Field Surveys ◽  
Small Areas ◽  
Negative Effect

ABSTRACT The effects of a 1992 oil spill and hurricane on salt marsh recovery on a Louisiana barrier island was evaluated through a combination of landscape- and community-scale analyses. Landscape-scale analyses indicated that the hurricane had a profound effect on island land cover and morphology. The analyses indicated that the oil spill had minimal effect on island vegetation. The landscape analysis detected changes in vegetative cover in areas where oiling occurred in 1992. Field surveys identified additional small areas where oil had a negative effect on land cover. The community-scale analysis detected fine-scale vegetative responses to the spill.

scholarly journals Fine-scale analysis of heavily invaded Italian freshwater fish assemblages

2017 ◽  
Vol 12 (6) ◽  
pp. 500-511 ◽  
Author(s):  
Annamaria NOCITA ◽  
Elena TRICARICO ◽  
Sandro BERTOLINO
Keyword(s):  
Freshwater Fish ◽  
Fish Assemblages ◽  
Fine Scale ◽  
Scale Analysis

scholarly journals Estimation of spatial and temporal overlap in three ungulate species in a Mediterranean environment

2020 ◽  
Author(s):  
Michele Zanni ◽  
Francesca Brivio ◽  
Stefano Grignolio ◽  
Marco Apollonio
Keyword(s):  
Interspecific Interactions ◽  
Activity Patterns ◽  
Temporal Distribution ◽  
Fine Scale ◽  
Intraspecific Interaction ◽  
Activity Rhythms ◽  
Use Of Resources ◽  
Temporal Segregation ◽  
Spatio Temporal ◽  
Temporal Overlap

AbstractInterspecific interactions are key drivers in structuring animal communities. Sympatric animals may show such behavioural patterns as the differential use of space and/or time to avoid competitive encounters. We took advantage of the ecological conditions of our study area, inhabited by different ungulate species, to investigate the spatial and temporal distribution of Capreolus capreolus, Dama dama and Sus scrofa. We estimated intraspecific interaction arising from the concomitant use of resources by using camera trapping. We collected 2741 videos with the three ungulates, which showed peculiar activity patterns. The three species were observed in all the habitat types of the study area over the four seasons, thus highlighting an evident spatial overlap. Moreover, our analysis demonstrated that the three species did not avoid each other through temporal segregation of their activities, rather showing a high overlap of daily activity rhythms, though with differences among the species and the seasons. Despite the high spatial and temporal overlap, the three species seemed to adopt segregation through fine-scale spatial avoidance: at an hourly level, the proportion of sites where the species were observed together was relatively low. This spatio-temporal segregation revealed complex and alternative behavioural strategies, which likely facilitated intra-guild sympatry among the studied species. Both temporal and spatio-temporal overlap reached the highest values in summer, when environmental conditions were more demanding. Given these results, we may presume that different drivers (e.g. temperature, human disturbance), which are likely stronger than interspecific interactions, affected activity rhythms and fine-scale spatial use of the studied species.

Trawl operations in the South East Fishery, Australia: spatial distribution and intensity

2001 ◽  
Vol 52 (4) ◽  
pp. 419 ◽  
Author(s):  
James W. P. Larcombe ◽  
Kevin J. McLoughlin ◽  
Richard D. J. Tilzey
Keyword(s):  
Interannual Variation ◽  
Fine Scale ◽  
Scale Analysis ◽  
Coarse Scale ◽  
Depth Stratum ◽  
North East ◽  
Management Area ◽  
Catch Rates ◽  
High Effort ◽  
Total Effort

Trawl areas and intensities were mapped at coarse (22 km 1986–99)and fine (1 km 1995–99)scales, and statistics reported by area and depth stratum. Total effort in hours was relatively stable to 1992, then increased substantially to 1999. The total distance trawled from fine-scale analysis showed a similar trend for the 1995–99 period. Coarse-scale analysis from 1986–99 indicated effort increases in north-east Bass Strait in particular, and also off western Tasmania and west of Bass Strait. There was little change in the total area of the fishery from 1995 to 1999, but grid cells on the periphery showed considerable interannual variation in the presence or absence of fishing. Increased or redistributed effort tended to further concentrate in the relatively small high-effort areas, rather than increasing equally across the grounds, or spreading to new grounds. In the total management area, a small proportion of the 1 km grids was fished. However, in 200–1000 m depth strata, ≥50%of the grids were fished with some intensity. The consequences and compromises of spatial scale are discussed in terms of data quality, the use of trawl effort as a surrogate for marine disturbance, and the interpretation of catch rates.

scholarly journals Fine-Scale Analysis Reveals Cryptic Landscape Genetic Structure in Desert Tortoises

PLoS ONE ◽  
2011 ◽  
Vol 6 (11) ◽  
pp. e27794 ◽  
Author(s):  
Emily K. Latch ◽  
William I. Boarman ◽  
Andrew Walde ◽  
Robert C. Fleischer
Keyword(s):  
Genetic Structure ◽  
Fine Scale ◽  
Scale Analysis ◽  
Landscape Genetic
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