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opencc-by-4.0Sep 2020View details →

Fig. 3 in Black Tern Nest-Site Fidelity In An Unstable Habitat: A Preliminary Study

Fig. 3. The distribution of Black Tern colonies at the northern part of Kaniv water reservoir. The only colonies shown here are those where the returns of birds, which had been marked in 2012–2019, were recorded.

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Data from: The biogeochemical boomerang: Site fidelity creates nutritional hotspots that may promote recurrent calving site reuse

Animals interact with nutrient cycles by consuming and depositing nutrients, interactions that are studied in the separate fields of nutritional ecology and zoogeochemistry. Recent theoretical work has begun bridging these disciplines, highlighting that animal-driven nutrient recycling could be crucial in helping animals meet nutritional needs. When animals exhibit site fidelity, they consistently deposit nutrients, potentially improving vegetation quality. We investigated this potential feedback by analyzing changes in forage nitrogen stocks following simulated caribou calving. We found that forage nitrogen stocks increased after two weeks and remained elevated after one year, a change due to an increase in forage quality but not quantity. We thus highlight a positive zoogeochemical feedback whereby caribou deposit nutrients during calving that become bioavailable during lactation and provide evidence that site fidelity creates a biogeochemical boomerang in which animals deposit nutrients that can be reused at a later time.

opencc-zeroMay 2024View details →

opencc-by-4.0Jan 2017View details →

Fig. 2 in Preliminary observations on the circadian variation in site fidelity in Atelopus hoogmoedi (Lescure, 1974) (Anura, Bufonidae)

Fig. 2. Geographical overview of the study area. (A) Map of the Iwokrama Forest Reserve and its location in Guyana (top right corner). The red line crossing Iwokrama corresponds to the Linden-Lethem Road. (B) Relief map of the Iwokrama Mountains with Turu Falls represented by a black triangle (N 4°24.770' W 58°47.061'). (C) Portion of the trail between Turu Falls camp and the Linden-Lethem Road monitored, with dots corresponding to Atelopus individuals (from A1 - N 4°24.742', W 58°47.130' to A14 - N 4°24.750', W 58°47.128'). A and B from Kok et al. (2013).

opencc-by-4.0Jan 2017View details →

Fig. 3 in Preliminary observations on the circadian variation in site fidelity in Atelopus hoogmoedi (Lescure, 1974) (Anura, Bufonidae)

Fig. 3. Substrate (shrub or leaf litter) use in Atelopus hoogmoedi during the day (light grey) and night (dark grey) at Turu Falls, Guyana. As indicated, substrate use was significantly different after dark.

opencc-by-4.0Jan 2017View details →

Fig. 1 in Preliminary observations on the circadian variation in site fidelity in Atelopus hoogmoedi (Lescure, 1974) (Anura, Bufonidae)

Fig. 1. (A) Orange and (B) Yellow color morphs of Atelopus hoogmoedi, both encountered at the studied locality in the Iwokrama Mountains, Guyana. (C) Typical breeding habitat of A. hoogmoedi in the Iwokrama Mountains. Photos by PJRK.

opencc-by-4.0Dec 2018View details →

Data for: Resource landscapes explain contrasting patterns of aggregation and site fidelity by red knots at two wintering sites

This repository contains data for the paper: Oudman et al. 2018. Resource landscapes explain contrasting patterns of aggregation and site fidelity by red knots at two wintering sites. Movement Ecology 6(14) 1-12. https://doi.org/10.1186/s40462-018-0142-4. Please cite the original publication when using this data.

Fig. 7 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 7. Activity Index showing proportion of each behavioural activity (foraging; socialising; traveling; resting) per sector.

Fig. 8 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 8. Monthly (N=25) and yearly (N=8) sighting rate (please see Material and Methods) for 19 identified Irrawaddy dolphins from Bago-Pulupandan (includes entire period of the sightings of these identified dolphins).

Fig. 3 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 3. Discovery curve of marked individual dolphins in the study area over 25 survey months from 2010 to 2016.

Fig. 1 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 1. Coastal waters of Bago City and the Municipality of Pulupandan in Guimaras Strait; Left inset: location of Western Visayas Region in the Philippines; Right inset: Guimaras Strait located between Negros Island and Guimaras Island.

Fig. 4. A in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 4. A, sightings of Irrawaddy dolphins (in yellow dots) relative to sectors; B, minimum convex polygon (MCP) of all sightings in Bago-Pulupandan coastal waters.

publicJul 2024View details →

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Data from: The biogeochemical boomerang: Site fidelity creates nutritional hotspots that may promote recurrent calving site reuse

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opencc-zeroJan 2021View details →

Data from: Drivers of site fidelity in ungulates

<ol> <li>While the tendency to return to previously visited locations – termed 'site fidelity' – is common in animals, the cause of this behaviour is not well understood. One hypothesis is that site fidelity is shaped by an animal's environment, such that animals living in landscapes with predictable resources have stronger site fidelity. Site fidelity may also be conditional on the success of animals' recent visits to that location, and it may become stronger with age as the animal accumulates experience in their landscape. Finally, differences between species, such as the way memory shapes site attractiveness, may interact with environmental drivers to modulate the strength of site fidelity. </li> <li>We compared inter-year site fidelity in 669 individuals across eight ungulate species fitted with GPS-collars and occupying a range of environmental conditions in North America and Africa. We used a distance-based index of site fidelity and tested hypothesized drivers of site fidelity using linear mixed effects models, while accounting for variation in annual range size.</li> <li>Mule deer Odocoileus hemionus and moose Alces alces exhibited relatively strong site fidelity, while wildebeest Connochaetes taurinus and barren-ground caribou Rangifer tarandus granti had relatively weak fidelity. Site fidelity was strongest in predictable landscapes where vegetative greening occurred at regular intervals (i.e. high temporal contingency). Species differed in their response to spatial heterogeneity in greenness (i.e. spatial constancy). Site fidelity varied seasonally in some species, but remained constant over time in others. Elk employed a 'win-stay, lose-switch' strategy, in which successful resource tracking in the springtime resulted in strong site fidelity the following spring. Site fidelity did not vary with age in any species tested.</li> <li>Our results provide support for the environmental hypothesis, particularly that regularity in vegetative phenology shapes the strength of site fidelity. Large unexplained differences in site fidelity suggests that other factors, possibly species-specific differences in attraction to known sites, contribute to variation in the expression of this behaviour.</li> <li>Understanding drivers of variation in site fidelity across groups of organisms living in different environments provides important behavioural context for predicting how animals will respond to environmental change.</li> </ol>

opencc-zeroDec 2019View details →

Data from: Personality predicts foraging site fidelity and trip repeatability in a marine predator

1. Animal populations are often comprised of both foraging specialists and generalists. For instance, some individuals show higher foraging site fidelity (spatial specialisation) than others. Such individual differences in degree of specialisation can persist over timescales of months or even years in long-lived animals, but the mechanisms leading to these different individual strategies are not fully understood. 2. There is accumulating evidence that individual variation in foraging behaviour is shaped by animal personality traits, such as boldness. Despite this, the potential for boldness to drive differences in the degree of specialisation is unknown. 3. In this study, we used novel object tests to measure boldness in black-legged kittiwakes (Rissa tridactyla) breeding at four colonies in Svalbard, and deployed GPS loggers to examine their at-sea foraging behaviour. We estimated the repeatability of foraging trips, and used a hidden Markov model to identify locations of foraging sites in order to quantify individual foraging site fidelity. 4. Across the breeding season, bolder birds were more repeatable than shy individuals in the distance and range of their foraging trips, and during the incubation period (but not chick rearing), bolder individuals were more site faithful. Birds exhibited these differences while showing high spatial similarity in foraging areas, indicating that site selection was not driven by personality-dependent spatial partitioning. 5. We instead suggest that a relationship between boldness and site fidelity may be driven by differences in behavioural flexibility between bold and shy individuals. Together, these results provide a potential mechanism by which widely reported individual differences in foraging specialisation may emerge.

opencc-zeroOct 2022View details →

Site fidelity and behavioral plasticity regulate an ungulate's response to extreme disturbance

1. With rapid global change, the frequency and severity of extreme disturbance events are increasing worldwide. The ability of animal populations to survive these stochastic events depends on how individual animals respond to their altered environments, yet our understanding of the immediate and short-term responses of animals to acute disturbances remains poor. 2. We focused on animal responses to the environmental disturbance created by megafire. Specifically, we explored the effects of the 2018 Mendocino Complex Fire in northern California, USA on the behaviour and body condition of black-tailed deer (Odocoileus hemionus columbianus). We predicted that deer would be displaced by the disturbance or experience high mortality post-fire if they stayed in the burn area. 3. We used data from GPS collars on 18 individual deer to quantify patterns of home range use, movement, and habitat selection before and after the fire. We assessed changes in body condition using images from a camera trap grid. The fire burned through half of the study area, facilitating a comparison between deer in burned and unburned areas. 4. Despite a dramatic reduction in vegetation in burned areas, deer showed high site fidelity to pre-fire home ranges, returning within hours of the fire. However, mean home range size doubled after the fire and corresponded with increased daily activity in a severely resource-depleted environment. Within their home ranges, deer also selected strongly for patches of surviving vegetation and woodland habitat, as these areas provided forage and cover in an otherwise desolate landscape. Deer body condition significantly decreased after the fire, likely as a result of a reduction in forage within their home ranges, but all collared deer survived for the duration of the study. 5. Understanding the ways in which large mammals respond to disturbance like wildfire is increasingly important as the extent and severity of such events increases across the world. While many animals are adapted to disturbance regimes, species that exhibit high site fidelity or otherwise fixed behavioural strategies may struggle to cope with increased climate instability and associated extreme disturbance events.

opencc-by-4.0Sep 2020View details →

Fig. 2 in Black Tern Nest-Site Fidelity In An Unstable Habitat: A Preliminary Study

Fig. 2. The distance resighted / recaptured nesting Black Terns moved

opencc-by-4.0Sep 2020View details →

Fig. 1 in Black Tern Nest-Site Fidelity In An Unstable Habitat: A Preliminary Study

Fig. 1. The number of birds returning in different periods of time from 2012 till 2019.

opencc-zeroApr 2022View details →

Data from: Site fidelity increases reproductive success by increasing foraging efficiency in a marine predator

Seabirds must find food efficiently in the dynamic ocean environment to succeed at raising chicks. In theory, site familiarity, gained by prior experience in a place, should increase foraging efficiency when prey is predictable, and translate into increased reproductive success, though this is difficult to test empirically. To address this, we examined foraging-site fidelity in Magellanic penguins, Spheniscus magellanicus, using movement data from 180 individuals tracked during 23 breeding seasons when penguins make repeated trips from their colony to feed chicks. We tested whether chlorophyll-a concentration, as a proxy for ocean productivity, affects foraging-site fidelity. We then tested whether foraging-site fidelity affects foraging efficiency and reproductive success. Mean foraging-site fidelity was higher in years with higher ocean productivity, when fronts had stronger gradients in temperature and chlorophyll, and prey was likely more predictable. When returning to previously visited foraging sites, penguins arrived and returned faster than predicted for a trip of a given distance, leading to lower mean trip durations and more frequent trips in penguins with high site fidelity. Increased foraging efficiency and chick-feeding frequency in turn led to increased chick survival. Our study reveals that foraging efficiency is a key mechanism linking foraging-site fidelity and reproductive success.

Fig. 6 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 6. Strong positive correlation between time spent in each sector with average depth.

Fig. 2 in Habitat use and site fidelity of Irrawaddy dolphins (Orcaella brevirostris) in the coastal waters of Bago-Pulupandan, Negros Occidental, Philippines

Fig. 2. Coastal waters of Bago and Pulupandan divided into 16 sectors.