scholarly journals Predictors of puma occupancy indicate prey vulnerability is more important than prey availability in a highly fragmented landscape

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Courtney A. C. Coon ◽  
Peter J. Mahoney ◽  
Emilie Edelblutte ◽  
Zara McDonald ◽  
David C. Stoner
Keyword(s):  
Prey Availability ◽  
Fragmented Landscape ◽  
Prey Vulnerability

Effects of ungulate availability on wolf reproductive potential in Alaska

1992 ◽  
Vol 70 (12) ◽  
pp. 2441-2443 ◽  
Author(s):  
R. D. Boertje ◽  
R. O. Stephenson
Keyword(s):  
Litter Size ◽  
Canis Lupus ◽  
Prey Availability ◽  
Subcutaneous Fat ◽  
Reproductive Potential ◽  
Functional Relationships ◽  
Adult Females ◽  
Prey Vulnerability ◽  
Average Litter Size

We compared wolf (Canis lupus) reproductive data for March and April, when ungulate biomass per wolf was high, moderate, and low. The percentage of reproductively active adult females was significantly lower (66% compared with ≥96%, P < 0.001) when ungulate biomass per wolf was low versus moderate or high. Reproductively inactive adult females had significantly less subcutaneous fat (P < 0.01) than reproductively active females when ungulate biomass per wolf was relatively abundant. Average litter size, estimated by counting blastocysts or fetuses, declined significantly (P < 0.001), from 6.9 to 4.6, as ungulate biomass per wolf declined. We conclude that wolf productivity declines as prey availability per wolf declines. However, only when ungulate biomass per wolf declined below levels previously reported in the literature did we observe significant declines in reproductive potential. Ungulate biomass per wolf was low because of large, rapid declines in ungulates and lesser declines in wolves. We recognize that functional relationships, e.g., prey vulnerability and feeding dominance, can influence wolf productivity independently of ungulate biomass per wolf.

Fidelity of greater sage-grouseCentrocercus urophasianusto breeding areas in a fragmented landscape

2003 ◽  
Vol 9 (1) ◽  
pp. 291-299 ◽  
Author(s):  
Michael A. Schroeder ◽  
Leslie A. Robb
Keyword(s):  
Fragmented Landscape

Pregnancy Cravings: Visitation at a Food-Provisioning Site is Driven by the Reproductive Status of Bottlenose Dolphins

2020 ◽  
Vol 15 (3) ◽  
pp. 237-248
Author(s):  
Valeria Senigaglia ◽  
Lars Bejder
Keyword(s):  
Prey Availability ◽  
Southern Oscillation ◽  
Bottlenose Dolphins ◽  
Reproductive Status ◽  
Food Provisioning ◽  
Human Interactions ◽  
Increase Risk ◽  
Lactating Females ◽  
Tourism Attractions ◽  
Marine Wildlife

Marine wildlife tourism attractions often use food rewards to ensure close-up encounters with freeranging animals. In Bunbury, Western Australia, the Dolphin Discovery Centre (DDC) conducts a foodprovision program where bottlenose dolphins (N = 22; between 2000 and 2018) are offered food rewards to encourage their visitation at a beach in front of the DDC. We used historical records on individual beach visits by adult female dolphins collected by the DDC from 2000 to 2018 to develop generalized mixed effects models (GLMM) to test whether the frequency of beach visitation was influenced by their reproductive status (pregnant, lactating, nonreproductive) or climatic events (El Niño-Southern Oscillation phases) that could affect prey availability. We also quantified the behavioral budget of dolphins during food-provisioning sessions and documented intra- and interspecific aggressive behaviors using individual focal follows collected in 2017–2018. Provisioned females spend most of the time resting within the interaction area (66.3%) and aggressive interactions arise as a consequence of dominance behavior over food access. Visitation rates were most influenced by reproductive status with pregnant and lactating females visiting the provisioning area more frequently (z = 2.085, p = 0.037 and z = 2.437, p = 0.014, respectively). Females that frequently visit the provisioning area expose their dependent calves to regular human interactions at an early age when they are more susceptible to behavioral conditioning. Such experiences could cause the loss of awareness towards humans and promote maladaptive behaviors such as begging that increase risk of entanglement in fishing gear, boat strikes, and propeller injuries.

Introduction

2018 ◽  
Author(s):  
Thibaut d'Hubert
Keyword(s):  
South Asia ◽  
Bay Of Bengal ◽  
Religious History ◽  
Literary Texts ◽  
Fragmented Landscape ◽  
Literary Production ◽  
Literary Traditions ◽  
Bengali Literature

The introduction opens with a reflection on the relative marginality of the kingdom of Arakan and what it entailed in terms of historiography. I observe a reconfiguration of cosmographical imaginaries around the sixteenth and seventeenth centuries that conditioned the formation of vernacular literary traditions in eastern South Asia and around the Bay of Bengal. Then I provide a brief overview of the Bengali poet Ālāol’s life and works and discuss what the study of his poetics brings to our knowledge of Middle Bengali literature. I highlight the fragmented landscape of Middle Bengali literary production and the need to study Middle Bengali poems as literary texts and not only as sources for social or religious history. The last section of the introduction provides an overview of the contents of the book.

Āṇṭāḷ

2018 ◽  
Author(s):  
Vijaya Nagarajan
Keyword(s):  
Tamil Nadu ◽  
Personal Narrative ◽  
Ninth Century ◽  
Fragmented Landscape ◽  
Folk Wisdom ◽  
Waking Up

Combining personal narrative, analytic insight, and poetics, in this chapter the author explores the parallels between the popular ninth century Tamil saint Āṇṭāḷ and the ritual of the kōlam in Tamil Nadu. The links between Āṇṭāḷ, her devotion to Vishnu, and the kōlam present a fragmented landscape of oral and written narrative, folk wisdom, and ideology. The author finds four similar themes between the story of Āṇṭāḷ and the ritual of making the kōlam: sacred time, waking up, forgiveness, and generosity. Āṇṭāḷ maintains a lively presence in the kōlam ritual even today. The author traces the possible origins of the kōlam in medieval Tamil texts.

scholarly journals Survival of the fattest: linking body condition to prey availability and survivorship of killer whales

Ecosphere ◽  
2021 ◽  
Vol 12 (8) ◽  
Author(s):  
Joshua D. Stewart ◽  
John W. Durban ◽  
Holly Fearnbach ◽  
Lance G. Barrett‐Lennard ◽  
Paige K. Casler ◽  
...  
Keyword(s):  
Body Condition ◽  
Prey Availability ◽  
Killer Whales

scholarly journals Prey Size Decline as a Unifying Ecological Selecting Agent in Pleistocene Human Evolution

Quaternary ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 7
Author(s):  
Miki Ben-Dor ◽  
Ran Barkai
Keyword(s):  
Prey Size ◽  
Prey Availability ◽  
Stone Tool ◽  
Foraging Efficiency ◽  
Energetic Cost ◽  
Large Prey ◽  
Biomass Density ◽  
Cultural Changes ◽  
Progressive Decline ◽  
Brain Expansion

We hypothesize that megafauna extinctions throughout the Pleistocene, that led to a progressive decline in large prey availability, were a primary selecting agent in key evolutionary and cultural changes in human prehistory. The Pleistocene human past is characterized by a series of transformations that include the evolution of new physiological traits and the adoption, assimilation, and replacement of cultural and behavioral patterns. Some changes, such as brain expansion, use of fire, developments in stone-tool technologies, or the scale of resource intensification, were uncharacteristically progressive. We previously hypothesized that humans specialized in acquiring large prey because of their higher foraging efficiency, high biomass density, higher fat content, and the use of less complex tools for their acquisition. Here, we argue that the need to mitigate the additional energetic cost of acquiring progressively smaller prey may have been an ecological selecting agent in fundamental adaptive modes demonstrated in the Paleolithic archaeological record. We describe several potential associations between prey size decline and specific evolutionary and cultural changes that might have been driven by the need to adapt to increased energetic demands while hunting and processing smaller and smaller game.

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