scholarly journals Habitat selection by an avian top predator in the tropical megacity of Delhi: human activities and socio-religious practices as prey-facilitating tools

2017 ◽  
Author(s):  
Nishant Kumar ◽  
Urvi Gupta ◽  
Yadvendradev V. Jhala ◽  
Qamar Qureshi ◽  
Andrew G. Gosler ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Human Activities ◽  
Religious Practices ◽  
Top Predator

Modeling Habitat Selection of a Top Predator: Considering Growth and Physical Environments in a Spatial Context

2012 ◽  
Vol 141 (1) ◽  
pp. 215-223 ◽  
Author(s):  
Cassandra J. May ◽  
D. Derek Aday ◽  
R. Scott Hale ◽  
Jonathan C. S. Denlinger ◽  
Elizabeth A. Marschall
Keyword(s):  
Habitat Selection ◽  
Spatial Context ◽  
Top Predator ◽  
Physical Environments ◽  
Selection Of

scholarly journals Specialization directs habitat selection responses to a top predator in semiaquatic but not aquatic taxa

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hana Šigutová ◽  
Filip Harabiš ◽  
Martin Šigut ◽  
Jiří Vojar ◽  
Lukáš Choleva ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Vegetation Structure ◽  
Aquatic Organisms ◽  
Bufo Bufo ◽  
Freshwater Ecosystems ◽  
Similar Response ◽  
Top Predator ◽  
Generalist Species ◽  
Selection Responses ◽  
Floating Macrophytes

AbstractHabitat selectivity has become an increasingly acknowledged mechanism shaping the structure of freshwater communities; however, most studies have focused on the effect of predators and competitors, neglecting habitat complexity and specialization. In this study, we examined the habitat selection of semiaquatic (amphibians: Bufonidae; odonates: Libellulidae) and aquatic organisms (true bugs: Notonectidae; diving beetles: Dytiscidae). From each family, we selected one habitat generalist species able to coexist with fish (Bufo bufo, Sympetrum sanguineum, Notonecta glauca, Dytiscus marginalis) and one species specialized in fishless habitats (Bufotes viridis, Sympetrum danae, Notonecta obliqua, Acilius sulcatus). In a mesocosm experiment, we quantified habitat selection decisions in response to the non-consumptive presence of fish (Carassius auratus) and vegetation structure mimicking different successional stages of aquatic habitats (no macrophytes; submerged and floating macrophytes; submerged, floating, and littoral-emergent macrophytes). No congruence between habitat specialists and generalists was observed, but a similar response to fish and vegetation structure defined both semiaquatic and aquatic organisms. While semiaquatic generalists did not distinguish between fish and fishless pools, specialists avoided fish-occupied pools and had a preferred vegetation structure. In aquatic taxa, predator presence affected habitat selection only in combination with vegetation structure, and all species preferred fishless pools with floating and submerged macrophytes. Fish presence triggered avoidance only in the generalist bug N. glauca. Our results highlight the significance of habitat selectivity for structuring freshwater ecosystems and illustrate how habitat selection responses to a top predator are dictated by specialization and life history.

Wolf habitat selection is shaped by human activities in a highly managed boreal forest

2012 ◽  
Vol 276 ◽  
pp. 125-131 ◽  
Author(s):  
Frédéric Lesmerises ◽  
Christian Dussault ◽  
Martin-Hugues St-Laurent
Keyword(s):  
Habitat Selection ◽  
Boreal Forest ◽  
Human Activities

Habitat Selection of Emberiza janknowshkii Taczanovski

2013 ◽  
Vol 726-731 ◽  
pp. 614-617
Author(s):  
Zhuo Zhang ◽  
Qian Qian Zhang ◽  
Chan Zhou
Keyword(s):  
Habitat Selection ◽  
Human Activities ◽  
Habitat Preference ◽  
Inner Mongolia ◽  
Earth Surface ◽  
Relict Species ◽  
Glacial Relict ◽  
Selection Of

Jankowskis bunting Emberiza janknowshkii Taczanovski is a glacial relict species. Habitat selection of jankowskis bunting Emberiza janknowshkii Taczanovski was investigated in Keerqin grassland of Inner Mongolia. The results showed that E. janknowshkii had obvious choice of habitat preference. Perch, the coverage of earth surface and height of plant had a significant impact on habitat selection of E. janknowshkii. Therefore, we should strengthen the protection for apricot, reduce human activities, such as cut grass, and protect height and coverage vegetation. And E. janknowshkii should be enclosure protected.

scholarly journals Long‐ and short‐term temporal variability in habitat selection of a top predator

Ecosphere ◽  
2015 ◽  
Vol 6 (4) ◽  
pp. 1-16 ◽  
Author(s):  
Alessia Uboni ◽  
Douglas W. Smith ◽  
Julie S. Mao ◽  
Daniel R. Stahler ◽  
John A. Vucetich
Keyword(s):  
Habitat Selection ◽  
Temporal Variability ◽  
Top Predator ◽  
Short Term ◽  
Selection Of

Governed by Gods

2018 ◽  
Author(s):  
Greg Anderson
Keyword(s):  
Human Activities ◽  
Religious Practices ◽  
Male And Female ◽  
Wide Range ◽  
Ecological Roles ◽  
Household Shrines

In this new account of Athenian demokratia, the most significant human activities in the polis were not political deliberations or economic transactions but ritual engagements with gods, the non-human agencies who ultimately controlled the very conditions of existence. To a point, offerings to gods were like taxes rendered to maintain the infrastructure of the cosmos. Ritual actions were thus performed more or less continually, at a wide range of locations, from household shrines to major sanctuaries, by all inhabitants of Attica, male and female, young and old, Athenian and non-Athenian alike. As the chapter stresses, these actions are best understood as ecological transactions, rather than as purely “religious” practices. Indeed, in such circumstances, where gods were potentially everywhere and anywhere in experience, the modern category “religion” has little or no valence or meaning. The chapter also highlights the ritual contributions to the life of the polis that were made by females, who played literally vital ecological roles through their involvements in numerous divine cults.

scholarly journals Composition of Bird Guilds Type in Modified Secondary Forest at Curup Tenang of Muara Enim Regency South Sumatera

2020 ◽  
Vol 2 (1) ◽  
pp. 66-78
Author(s):  
Fajar Islam Sitanggang ◽  
Mokhamad Asyief K Budiman ◽  
Andy Afandy ◽  
Budi Prabowo
Keyword(s):  
Human Activities ◽  
Secondary Forest ◽  
Canopy Cover ◽  
Top Predator ◽  
Food Network ◽  
Energy Cycle ◽  
Parking Lot ◽  
Surrounding Areas

The balance of the ecosystem in a location is certainly related to the food-eating process that occurs in it. This long process is naturally used by natural organisms to flow the energy cycle chains that exist in each individual. The condition of habitat balance can be identified by the structure of bird guilds in an ecosystem. Quiet curly tourism area has a unified landscape landscape in the form of modified secondary forest. This is indicated by the presence of canopy cover that is no longer dense and modified by human activities. The location of the study this time was carried out in several locations of quiet curup tourist areas, namely in the parking lot and its surroundings, the biodiversity park of Bedegung and its surroundings, the curup waterfalls of calm and surrounding areas. The study was conducted on 6-8 August 2019. Field findings found eight types of bird guilds, namely insectivores, frugivores, carnivores, omnivores, granivores, piscivores, insectivores, frugivores and nectinivores. Most guild members found were insectivores with 43 species of members. The structure of food network pyramids that can be compiled from the results of the study are granivores and frugivores, and pure carnivores occupy the top rank with members of 3 species. Pure carnivore is a top predator in this quiet, steep landscape. Its existence is very important to control the guild population that is below it. So that the balance of the ecosystem in this location can be seen from the benchmarks of the existence of this pure carnivore type.

scholarly journals Chronic exposure of Hawaii Island spinner dolphins ( Stenella longirostris ) to human activities

2018 ◽  
Vol 5 (10) ◽  
pp. 171506 ◽  
Author(s):  
Julian A. Tyne ◽  
Fredrik Christiansen ◽  
Heather L. Heenehan ◽  
David W. Johnston ◽  
Lars Bejder
Keyword(s):  
Habitat Selection ◽  
Human Activities ◽  
Human Exposure ◽  
Anthropogenic Activities ◽  
Population Level ◽  
Resting Behaviour ◽  
Stenella Longirostris ◽  
Hawaii Island ◽  
Rest Time ◽  
Spinner Dolphins

Habitat selection is strongly influenced by spatial variations in habitat quality and predation risk. Repeated exposure of wildlife to anthropogenic activities in important habitats may affect habitat selection, leading to negative biological consequences. We quantified the cumulative human exposure of a small, genetically isolated and behaviourally constrained spinner dolphin ( Stenella longirostris ) population, off Hawaii Island, and exposure effects on their daytime cumulative activity budget. Dolphins were exposed to human activities within 100 m for 82.7% of the daytime, with a median duration of 10 min between exposure events. Individual dolphins spent on average 61.7% (s.d. = 6.5) of their daytime resting. Of their total rest time, greater than 90% occurred inside sheltered bays. Despite high levels of human exposure, we did not observe an effect on dolphin resting behaviour. The short intervals between exposure events probably prevent dolphins from returning to a natural resting state before the next event. Consequently, ‘control’ observations may represent a resting behaviour of a more vigilant nature. Chronic levels of exposure to human activities could lead to rest deprivation, displacement from preferred resting habitats and ultimately negative population level effects. These results have implications for new proposed legislation aiming to reduce dolphin exposure to human activities.

scholarly journals Hidden in plain sight: detectability and habitat selection of the central plateau dusky rattlesnake in anthropized landscapes

2021 ◽  
pp. 91-98
Author(s):  
Leroy Soria-Díaz
Keyword(s):  
Habitat Selection ◽  
Human Activity ◽  
Human Activities ◽  
Landscape Change ◽  
Climatic Factors ◽  
Agricultural Fields ◽  
Native Vegetation ◽  
Central Plateau ◽  
The World ◽  
Selection Of

Human activities have caused several changes in biotic communities all over the world. Some species maintain viable populations in altered environments through different adaptations, however, knowledge in this regard is scarce for certaintaxa, including reptiles. We analysed the detectability and habitat selection of the rattlesnake Crotalus triseriatus to contribute to our knowledge about how this species responds to anthropogenic landscape change. Rattlesnakes were monitored for two years in two anthropized landscapes using visual encounter surveys. We analysed detectability in relation to climatic factors and human activity, and habitat selection was analysed in native and non-native vegetation. Our study shows that detectability of C. triseriatus is differentially affected in anthropized landscapes; human activity may be determinant in landscapes such as agricultural fields, whilst climatic factors may be determinant in landscapes where people are less active such as the protected areas within urban parks. The analyses of habitat selection shows that native vegetation is crucial for the persistence of C. triseriatus in the studied landscapes. Several strategies may allow rattlesnakes to persist in different anthropized landscapes; nonetheless, native habitat remnants should be protected in anthropized areas to conserve wildlife.

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