Anthropogenic Development Drives Species to Be Endangered

2015 ◽  
Author(s):  
Michael J. Lynch ◽  
Michael A. Long ◽  
Paul B. Stretesky
Keyword(s):  
Anthropogenic Development

scholarly journals Challenges in updating habitat suitability models: An example with the lesser prairie-chicken

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0256633
Author(s):  
Catherine S. Jarnevich ◽  
Pairsa N. Belamaric ◽  
Kent Fricke ◽  
Mike Houts ◽  
Liza Rossi ◽  
...  
Keyword(s):  
Land Cover ◽  
Habitat Suitability ◽  
Negative Relationship ◽  
Suitable Habitat ◽  
Habitat Suitability Model ◽  
Current Information ◽  
Land Cover Data ◽  
Prairie Chicken ◽  
Anthropogenic Development ◽  
Iteration Model

Habitat loss from land-use change is one of the top causes of declines in wildlife species of concern. As such, it is critical to assess and reassess habitat suitability as land cover and anthropogenic features change for both monitoring and developing current information to inform management decisions. However, there are obstacles that must be overcome to develop consistent assessments through time. A range-wide lek habitat suitability model for the lesser prairie-chicken (Tympanuchus pallidicinctus), currently under review by the U. S. Fish and Wildlife Service for potential listing under the Endangered Species Act, was published in 2016. This model was based on lek data from 2002 to 2012, land cover data ranging from 2001 to 2013, and anthropogenic features from circa 2011, and has been used to help guide lesser prairie-chicken management and anthropogenic development actions. We created a second iteration model based on new lek surveys (2015 to 2019) and updated predictors (2016 land cover and cleaned/updated anthropogenic data) to evaluate changes in lek suitability and to quantify current range-wide habitat suitability. Only three of 11 predictor variables were directly comparable between the iterations, making it difficult to directly assess what predicted changes resulted from changes in model inputs versus actual landscape change. The second iteration model showed a similar positive relationship with land cover and negative relationship with anthropogenic features to the first iteration, but exhibited more variation among candidate models. Range-wide, more suitable habitat was predicted in the second iteration. The Shinnery Oak Ecoregion, however, exhibited a loss in predicted suitable habitat that could be due to predictor source changes. Iterated models such as this are important to ensure current information is being used in conservation and development decisions.

Research of Air Flows Dynamics at Construction Works in the Condition of Urban Built-Up Areas

2018 ◽  
Vol 875 ◽  
pp. 183-186 ◽  
Author(s):  
I.V. Stefanenko ◽  
Valery N. Azarov ◽  
Katerina A. Trokhimchuk ◽  
Marina V. Trokhimchuk
Keyword(s):  
Dust Emission ◽  
Physical And Mechanical Properties ◽  
Simulation Modelling ◽  
Climatic Conditions ◽  
Fine Dust ◽  
Software Applications ◽  
Physico Chemical ◽  
Anthropogenic Development ◽  
Air Flows ◽  
Construction Works

The paper shows that the fulfillment of construction works influences the level of fine dust content in urban environment. Investigations of fine dust emissions in the zones of earth excavations and soil spoil banks caused by construction works were carried out. The authors conducted an integrated investigation of the physico-chemical processes in the surface layer of the atmosphere in the course of construction works, which was based on the field and computational experiments. With the help of a laboratory wind-tunnel plant, it was revealed that the character of dust emission during the development of dispersive massifs depends on the climatic conditions, in particular on the wind velocity and the physical-and-mechanical properties of the rocks (humidity, porosity, plasticity indices). A specific-purpose GIS application has been designed which allows modelling the dynamics of air flows in the territories with anthropogenic development. The application is based on the methods of mathematical and simulation modelling, the methods of visualization and surface plotting as well as the methods of software applications development.

scholarly journals Environmental dynamics and anthropogenic development alter philopatry and space-use in a North American cervid

2016 ◽  
Vol 22 (5) ◽  
pp. 547-557 ◽  
Author(s):  
Joseph M. Northrup ◽  
Charles R. Anderson ◽  
George Wittemyer
Keyword(s):  
North American ◽  
Space Use ◽  
Anthropogenic Development

scholarly journals Diversity and distribution of microalgae in coastal areas of East Java, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
UMI ZAKIYAH ◽  
MULYANTO ◽  
LUCIA TRI SUWANTI ◽  
MOCHAMAD DONNY KOERNIAWAN ◽  
EKO AGUS SUYONO ◽  
...  
Keyword(s):  
Human Activities ◽  
Diversity Index ◽  
Renewable Energy Sources ◽  
Biodiversity Loss ◽  
Coastal Areas ◽  
South Coast ◽  
North Coast ◽  
The North ◽  
Anthropogenic Development ◽  
North And South

Abstract. Zakiyah U, Mulyanto, Suwanti LT, Koerniawan MD, Suyono EA, Budiman A, Siregar UJ. 2020. Diversity and distribution of microalgae in coastal areas of East Java, Indonesia. Biodiversitas 21: 1149-1159. Indonesia is well known as one of hotspot for biodiversity, including marine resources. However, Indonesia biodiversity has declined rapidly due to the changes in the aquatic environmental quality as the consequence of human activities. Biodiversity loss has been well studied in larger organisms, however, less is known for microorganisms, such as microalgae. Microalgae have received much attention recently due to its potential as renewable energy sources. This study aimed at describing biodiversity and distribution of microalgae in coastal areas of East Java and Madura, Indonesia. Six sites, i.e. Trenggalek and Sendangbiru representing south coast, Banyuwangi and Situbondo representing north coast of East Java, Pasongsongan and Pamekasan representing Madura north and south coast, respectively were sampled, which representing different background of anthropogenic development in these areas. Results showed that seawater condition in all sites is still good, with average pH 8.0 despite intense human activities, such as ecotourism, fishing and boat harbor, as well as residential area that has the potential to produce a lot of waste. Totally, there were 35 genera from all locations with varying abundance in each location and diversity index ranging from 1.105-3.312. Although most genera belonged to Bacyllariophyta, domination indices showed that there was not any single specific domination in all locations. Morisita indices showed that most distribution gave positive values indicating clumped dispersion of microalgae in all locations. Higher Shannon-Weaver indices characterized the south coast of East Java and Madura compared to the north coast of East Java area, which corresponded with lower dominancy indices.

scholarly journals The specificities of coastal territories of Ladoga Lake and their impact upon formation of recreational system of the coastline

2020 ◽  
pp. 100-114
Author(s):  
Alla Sergeevna Proshina
Keyword(s):  
Water Resource Management ◽  
Climatic Factors ◽  
Coastal Areas ◽  
Cultural Value ◽  
Planning System ◽  
Beach Recreation ◽  
Ladoga Lake ◽  
Anthropogenic Development ◽  
The Republic ◽  
Northwestern Russia

The object of this research is the coastal territories of Ladoga Lake, their structure substantiated by the natural-geographical peculiarities, and specificities conditioned by anthropogenic development. The coastline of Ladoga Lake is capable of ecological stabilization of a significant territory, ensure the population of Leningrad Oblast and the Republic of Karelia with a wide variety of recreational functions, and forms of tourism. The dynamic processes of its economic development require the elaboration of new principles and grounds of landscape-recreational organization of coastal areas, creation of typical models for Northwestern Russia. Analysis is conducted on the natural-climatic, historical-cultural and other specific characteristics of the coastal areas of Ladoga Lake, as well as determines their impact upon landscape-recreational organization of coastline. The author also examines the cartographic data and statistical reports, carries out a comparative analysis of environmental indexes in retrospective, as well as systematized data on the spatial-planning system of coastline based on the land use documents. Climatic specificities determine the focus of attention not on the beach recreation, but other types based on the uniqueness and diversity of natural components of the coastline of Ladoga Lake. Integrating into the system of environmental framework, the infrastructure of recreational areas, their transport and pedestrian support alongside specially protected zones, performs an environmental protection function. In order to prevent future destruction of landscape complexes on the coastline of Ladoga Lake, it is essential to establish universal rules and regulation for natural and water resource management. Due to natural and climatic factors, landscape peculiarities and historical-cultural value of Ladoga Lake coastline, one of the fundamental vectors in arrangement of its recreational zones is ecotourism.

scholarly journals The Apparent Resilience of the Dry Tropical Forests of the Nicaraguan Region of the Central American Dry Corridor to Variations in Climate Over the Last C. 1200 Years

Quaternary ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 25 ◽  
Author(s):  
William J. Harvey ◽  
Nathan Stansell ◽  
Sandra Nogué ◽  
Katherine J. Willis
Keyword(s):  
Tropical Forests ◽  
Anthropogenic Impacts ◽  
Population Expansion ◽  
Anthropogenic Disturbances ◽  
Central American ◽  
European Contact ◽  
Dry Tropical Forests ◽  
Anthropogenic Development ◽  
The Face ◽  
Future Population

The Central American Dry Corridor (CADC) is the most densely populated area of the Central American Isthmus and is subject to the greatest variability in precipitation between seasons. The vegetation of this region is composed of Dry Tropical Forests (DTF), which are suggested to be highly susceptible to variations in climate and anthropogenic development. This study examines the vulnerability of past DTF surrounding the Asese peninsula, Nicaragua to climatic and anthropogenic disturbances over the past c. 1200 years. Past vegetation, climate, burning, and animal abundance were reconstructed using proxy analysis of fossil pollen, diatoms, macroscopic charcoal, and Sporormiella. Results from this research suggest that DTF have been highly resilient to past climatic and anthropogenic perturbations. Changes in DTF structure and composition appear to be linked to the abundance and intensity of fire. Pre-Columbian anthropogenic impacts on DTF are not detected in the record; however, DTF taxa decline slightly after European contact (1522 C.E.). Overall the DTF for the Nicaraguan region of the CADC were found to be highly resilient to both climatic and anthropogenic disturbances, suggesting that this region will continue to be resilient in the face of future population expansion and climatic variation.

Mapping forest areas threatened by fires and windthrows (on the example of the Ural territory)

2020 ◽  
Vol 958 (4) ◽  
pp. 19-30
Author(s):  
A.N. Shikhov ◽  
R.K. Abdullin ◽  
A.V. Semakina
Keyword(s):  
Species Composition ◽  
Input Data ◽  
Ural Region ◽  
Climatic Variables ◽  
Forest Species ◽  
Predominant Species ◽  
Anthropogenic Development ◽  
Forest Species Composition ◽  
Perm Region ◽  
Main Factor

The authors discuss the methods and results of mapping the forest susceptibility to wildfires and windthrows on the example of the Ural region. We used the previously published database of fire-and wind-related forest damages in the Ural region for 2000–2016 as input data. The method of mapping is based on the analysis of the relationships of fire- and wind-damaged area with forest species composition, landscape and climatic variables, and with some indicators of anthropogenic development of the territory. The predominant forest species make the main factor determining the exposure to wildfires and windthrows. So, the calculations were performed separately for forests with various predominant species. As a result, the maps of forest susceptibility to wildfires and windthrows were created for the entire territory of the Ural, Perm region and separately for the Krasnovishersk district of the mentioned region. The obtained estimates can be used both in forestry planning and improving the monitoring of wildfires and windthrows.

scholarly journals Littoral chironomids of a large Alpine lake: spatial variation and variables supporting diversity

2018 ◽  
pp. 45
Author(s):  
Victor Frossard ◽  
Philippe Marchand
Keyword(s):  
Spatial Scales ◽  
Variance Partitioning ◽  
Taxonomic Composition ◽  
Large Lakes ◽  
Carbonate Concentration ◽  
Β Diversity ◽  
Spatial Changes ◽  
Anthropogenic Development ◽  
Subfossil Remains ◽  
Local Contribution

Chironomidae are a major group of littoral secondary producers whose spatial changes in assemblage structures are shaped by diverse variables. Using their subfossil remains, we aimed at disentangling the relative impact of environmental, topographic, littoral occupation and hydrodynamic variables on the littoral assemblages as well as identifying taxa and sites of primary importance for the β-diversity in a large lake (Lake Bourget). A redundancy analysis coupled with a variance partitioning indicated that 22 % of the assemblage variability was explained by slope, carbonate concentration and littoral occupation. A non-negligible fraction of non-separable variance among these variables likely highlights the topographic constraint on anthropogenic development and environmental conditions. Taxonomic turnover overwhelmingly (93.2 %) dominated the assemblage changes indicating site-specific taxonomic composition. The taxa contribution to β-diversity was positively correlated with their mean abundances. The local abundances were either positively or negatively correlated with local contribution of sites to β-diversity (LCBD) providing evidence for different contributions of taxa to β-diversity. A couple of taxa (i.e.Cricotopusspp.,Microtendipessp. andCladotanytarsussp.) and sites (i.e.LB57, LB31, LB2) clearly supported the major variations of β-diversity and are therefore identified as being of primary importance regarding conservation programs. Both LCBD variations and taxa spatial autocorrelations suggest that chironomid assemblages were the most variable at a spatial-scale ranging from 500 m to 1 km, characterizing the spatial successions of littoral contexts. These results illustrate the need for considering short spatial scales to reveal the extent of the benthic diversity in the littoral areas of large lakes.

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