The third dimension of bat migration: evidence for elevational movements of Miniopterus natalensis along the slopes of Mount Kilimanjaro

Voigt, Christian C.; Helbig‐Bonitz, Maria; Kramer‐Schadt, Stephanie; Kalko, Elisabeth K. V.

doi:10.1007/s00442-013-2819-0

Cited by 12 publications

(15 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For ungulates and birds in temperate regions, uphill migration is often driven by the availability and quality of food resources and reduced predation risk at higher elevations during the spring and summer (Festa-Bianchet, 1988;Albon & Langvatn, 1992;Garwood et al, 2009), while downhill migration is often driven by cold temperature and precipitation, especially snow (O'Neill & Parker, 1978;Parrini et al, 2003). By contrast, several bat species in temperate regions migrate uphill during the autumn and winter because conditions at higher elevations are more suitable for hibernation and migrate downhill for breeding and rearing young (Esbérard et al, 2011;Voigt et al, 2014). Warm temperatures at low elevations during the summer may also drive uphill migration of animals in temperate regions because of desiccation of forage vegetation and heat stress (Aublet et al, 2009).…”

Section: (2) Complexity Of Altitudinal Migrationmentioning

confidence: 99%

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

et al. 2018

View full text Add to dashboard Cite

Animal migration has been the subject of intensive research for more than a century, but most research has focused on long-distance rather than short-distance migration. Altitudinal migration is a form of short-distance migration in which individuals perform seasonal elevational movements. Despite its geographic and taxonomic ubiquity, there is relatively little information about the intrinsic and extrinsic factors that influence altitudinal migratory behaviour. Without this information, it is difficult to predict how rapid environmental changes will affect population viability of altitudinal migrants. To synthesize current knowledge, we compiled literature on altitudinal migration for all studied taxa, and identified the leading hypotheses explaining this behaviour. Studies of animal altitudinal migration cover many taxonomic lineages, with birds being the most commonly studied group. Altitudinal migration occurs in all continents except for Antarctica, but about a third of the literature focused on altitudinal migration in North America. Most research suggests that food and weather are the primary extrinsic drivers of altitudinal migration. In addition, substantial individual-level variation in migratory propensity exists. Individual characteristics that are associated with sex, dominance rank, and body size explain much of the variation in migratory propensity in partially migratory populations, but individual-level correlates are poorly known for most taxa. More research is needed to quantify the effects of habitat loss, habitat fragmentation, and climate change on altitudinal migrants. Demographic studies of individually marked populations would be particularly valuable for advancing knowledge of the cascading effects of environmental change on migratory propensity, movement patterns, and population viability. We conclude our review with recommendations for study designs and modelling approaches that could be used to narrow existing knowledge gaps, which currently hinder effective conservation of altitudinal migratory species.

show abstract

Section: (2) Complexity Of Altitudinal Migrationmentioning

confidence: 99%

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

et al. 2018

View full text Add to dashboard Cite

show abstract

“…; Voigt et al. ), and fish (Soto et al. ); and has also been considered as an important forensic tool (Bowen et al.…”

Section: Introductionmentioning

confidence: 99%

“…1; Hobson and Wassenaar 2008). In particular, the use of stable hydrogen isotope (d 2 H) measurements now allows inferences of animal origins at continental scales; has led to significant advances in our understanding of movements and origins of birds, insects (Wassenaar and Hobson 1998;Wunder et al 2005;Brattstr€ om et al 2010;Hobson et al 2014), bats (Cryan et al 2014;Voigt et al 2014), and fish (Soto et al 2013); and has also been considered as an important forensic tool (Bowen et al 2005;H enaux et al 2011). The isotope approach is based on the fact that (1) food ª 2015 The Authors.…”

Section: Introductionmentioning

confidence: 99%

On the use of stable oxygen isotope (δ¹⁸O) measurements for tracking avian movements in North America

Hobson

Koehler

2015

Ecology and Evolution

View full text Add to dashboard Cite

Tracking migratory animals has benefitted using measurements of naturally occurring stable isotopes of hydrogen (δ2H) in keratinous tissues such as hair and feathers to link animal origins to continental patterns or isoscapes of δ2H in precipitation. However, for most taxa, much less information exists on the use of stable oxygen isotope ratios (δ18O) despite the fact that δ2H and δ18O are strongly linked in environmental waters through the meteoric relationship and the possibility of using both isotopes to infer greater information on origins and climatic conditions where tissues are grown. A fundamental requirement of using stable isotopes to assign individuals and populations to origins is the development of a rescaling function linking environmental food web signals to the tissue of interest and for birds, this has not been carried out. Here, we derived the relationship between H and O isotopes in known source feathers of 104 individuals representing 11 species of insectivorous passerines sampled across the strong precipitation isoscape of North America. We determined again a strong expected relationship between feather δ2H (δ2Hf) and long-term amount-weighted precipitation δ2H (δ2Hp; r2 = 0.77), but the corresponding relationship between δ18Of and δ18Op was poor (r2 = 0.32) for the same samples. This suggests that δ2H measurements are currently more useful for assignment of insectivorous songbirds to precipitation isoscapes but does not preclude other uses of the δ18Of data. Currently, mechanisms responsible for the decoupling of H and O isotopes in food webs is poorly known, and we advocate a much broader sampling of both isotopes in the same keratinous tissues across precipitation isotope gradients and across taxa to resolve this issue and to increase the power of using water isotopes to track migratory animals.

show abstract

“…2013, Voigt et al . 2014), specifically arthropod abundance, might relax local competition and, thus, facilitate co-occurrence. Intensive local surveys at certain sites suggest that species occurring in western Madagascar show seasonal variation in their presence (Rakotondramanana & Goodman 2011).…”

Section: Introductionmentioning

confidence: 99%

Coexistence of morphologically similar bats (Vespertilionidae) on Madagascar: stable isotopes reveal fine-grained niche differentiation among cryptic species

Dammhahn

Rakotondramanana

2014

J. Trop. Ecol.

View full text Add to dashboard Cite

Link to this article: http://journals.cambridge.org/abstract_S0266467414000741How to cite this article: Melanie Dammhahn, Claude Fabienne Rakotondramanana and Steven M. Goodman (2015). Coexistence of morphologically similar bats (Vespertilionidae) on Madagascar: stable isotopes reveal ne-grained niche differentiation among cryptic species.Abstract: Based on niche theory, closely related and morphologically similar species are not predicted to coexist due to overlap in resource and habitat use. Local assemblages of bats often contain cryptic taxa, which co-occur despite notable similarities in morphology and ecology. We measured in two different habitat types on Madagascar levels of stable carbon and nitrogen isotopes in hair (n = 103) and faeces (n = 57) of cryptic Vespertilionidae taxa to indirectly examine whether fine-grained trophic niche differentiation explains their coexistence. In the dry deciduous forest (Kirindy), six sympatric species ranged over 6.0‰ in δ 15 N, i.e. two trophic levels, and 4.2‰ in δ 13 C with a community mean of 11.3‰ in δ 15 N and −21.0‰ in δ 13 C. In the mesic forest (Antsahabe), three sympatric species ranged over one trophic level (δ 15 N: 2.4‰, δ 13 C: 1.0‰) with a community mean of 8.0‰ δ 15 N and −21.7‰ in δ 13 C. Multivariate analyses and residual permutation of Euclidian distances in δ 13 C-δ 15 N bi-plots revealed in both communities distinct stable isotope signatures and species separation for the hair samples among coexisting Vespertilionidae. Intraspecific variation in faecal and hair stable isotopes did not indicate that seasonal migration might relax competition and thereby facilitate the local co-occurrence of sympatric taxa.

show abstract

The third dimension of bat migration: evidence for elevational movements of Miniopterus natalensis along the slopes of Mount Kilimanjaro

Cited by 12 publications

References 59 publications

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

On the use of stable oxygen isotope (δ¹⁸O) measurements for tracking avian movements in North America

Coexistence of morphologically similar bats (Vespertilionidae) on Madagascar: stable isotopes reveal fine-grained niche differentiation among cryptic species

Contact Info

Product

Resources

About

The third dimension of bat migration: evidence for elevational movements of Miniopterus natalensis along the slopes of Mount Kilimanjaro

Cited by 12 publications

References 59 publications

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

Altitudinal migration: ecological drivers, knowledge gaps, and conservation implications

On the use of stable oxygen isotope (δ18O) measurements for tracking avian movements in North America

Coexistence of morphologically similar bats (Vespertilionidae) on Madagascar: stable isotopes reveal fine-grained niche differentiation among cryptic species

Contact Info

Product

Resources

About

On the use of stable oxygen isotope (δ¹⁸O) measurements for tracking avian movements in North America