Conservation and management of migratory species

Shuter, Jennifer; Broderick, Annette C.; Agnew, David J.; Jonzén, Niclas; Godley, Brendan J.; Milner‐Gulland, E. J.; Thirgood, Simon

doi:10.1093/acprof:oso/9780199568994.003.0011

Cited by 32 publications

(36 citation statements)

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“…An indirect effect on population productivity might be expected. These likely effects of climate change are similar to those predicted for other migratory species (Lundberg & Moberg 2003;Shuter et al 2010), but in our study we have been able to characterise potential changes spatially and in more detail than is commonly possible. It has also been instructive to consider how conservation outcomes may interact with climate change; successful conservation tends to mitigate the effects of climate change, while conservation failure exacerbates the patchiness and loss of suitable habitat.…”

Section: Discussionsupporting

confidence: 74%

Conserving a moving target: planning protection for a migratory species as its distribution changes

Singh¹,

Milner‐Gulland

2010

Journal of Applied Ecology

101

112

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Summary1. Conservation of declining migratory species is a challenging task, as the factors that may have determined their past distribution may not determine their current and future distribution. Saiga antelope Saiga tatarica populations have massively declined due to poaching. The species is now beginning to recover in Kazakhstan and protected areas are being implemented. Using 25 years of aerial monitoring data, we identified changes in the spring distribution and predicted densities of saiga to prioritize areas for protection under scenarios of climate change together with changes in disturbance and population size. Conserving the spring distribution is critical as spring calving aggregations are of particular importance to population viability. 2. The current distribution is strongly influenced by disturbance, whereas climate had a stronger influence in the past. The area of highly suitable habitat has halved and become fragmented in the last decade. The existing and proposed protected areas are relatively complementary and perform well under most scenarios of future change. However there is a need to widen the geographical scope of protected area planning if potential future high suitability areas are to be effectively protected. 3. Climate change interacts with other factors to determine the distribution of suitable habitat within and outside protected areas. Scenarios in which conservation has increased saiga population size and density tend to show limited impacts of climate change, while scenarios in which the saiga population fails to recover and disturbance continues show, worsening patchiness and reduced suitable habitat. 4. Synthesis and applications. We provide evidence for changing distribution and density of a migratory species over a large spatio-temporal scale, and suggest that future distribution may be more constrained and spatially heterogeneous. These results have important implications for designing future conservation measures for migratory species, such that areas that robustly show high suitability under a range of potential scenarios of change can be included in protected area expansion plans. Protected area placement based only on current, rather than projected distribution risks wasting opportunities for proactive conservation, particularly for a highly disturbed, recovering species likely to be affected by climate change.

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Section: Discussionsupporting

confidence: 74%

Conserving a moving target: planning protection for a migratory species as its distribution changes

Singh¹,

Milner‐Gulland

2010

Journal of Applied Ecology

101

112

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“…Good knowledge of the spatial distribution of migrant populations across the annual cycle is critical for their conservation (Shuter et al 2011, Klaassen et al 2014, Hewson et al 2016. However, little is known about the migratory behaviour (including the selection of stopover sites) of many endangered short-distance migrants or about the potential negative impact of human infrastructures during their migratory movements (e.g.…”

Section: Implications For Conservationmentioning

confidence: 99%

“…Migratory strategies and decisions along the trajectory, such as interrupting migration at particular stopover sites for resting and/or refuelling (Newton 2008), play a key role in the success of the movement and subsequent survival (Alerstam et al 2003, Legagneux et al 2012. Therefore, understanding migratory decisions including stopover use and habitat selection en route is crucial to estimate population trends and risks predict changes in migratory behaviour and develop appropriate conservation strategies (Shuter et al 2011). In this context, a good knowledge of migratory connectivity, which refers to the extent to which animals from the same breeding area move to the same non-breeding areas (Newton 2008), is also important, especially for species with highly selective habitat preferences (e.g.…”

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confidence: 99%

Male post‐breeding movements and stopover habitat selection of an endangered short‐distance migrant, the Little Bustard Tetrax tetrax

Alonso

Correia

Marques

et al. 2019

Ibis

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Migratory decisions, such as the selection of stopover sites, are critical for the success of post‐breeding migratory movements and subsequent survival. Recent advances in bio‐logging have revealed the stopover strategies of many long‐distance migrants, but far less attention has been given to short‐distance migrants. We investigated the stopover ecology of an endangered grassland bird, the Little Bustard Tetrax tetrax, a short‐distance migrant in Iberia. Using high‐resolution spatial GPS/GSM data, 27 male Little Bustards breeding in southern Portugal were tracked between 2009 and 2011. We studied post‐breeding movements using Dynamic Brownian Bridge models to identify the main stopover sites, and generalized linear mixed models to examine habitat selection in stopovers. During their post‐breeding movements, males were essentially nocturnal migrants, making frequent stopovers while maintaining a relatively fast pace to reach more productive agricultural post‐breeding areas. Stopovers occurred in most post‐breeding movements (83%) regardless of the total distance covered (average 64.3 km), and most stopovers (84%) lasted less than 24 h. Birds used mostly agricultural non‐irrigated and irrigated croplands as stopover sites and avoided other land uses and rugged terrain. There was a negative relationship between stopovers and the proximity to roads, but not to power lines. The high frequency of stopovers during post‐breeding movements, despite the short distances travelled, together with the nocturnal migratory behaviour of bustards, may impose additional risks to a bird mainly threatened by collision with power lines in non‐breeding areas. We also conclude that even for short‐distance migrants, habitat connectivity between breeding and post‐breeding areas is likely to be a key conservation concern.

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“…2003; Bolger et al. 2008), there is considerable interest in first characterizing patterns of fidelity and dispersal in migratory populations, and secondly in identifying the mechanisms that generate these patterns (Shuter et al. 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Some species exhibit a more flexible migration strategy in which some or all individuals appear capable of switching sites, possibly in response to changing environmental conditions (Sutherland 1998). Because this flexibility can have important demographic, genetic and conservation implications for migratory populations (Doligez et al 2003;Bolger et al 2008), there is considerable interest in first characterizing patterns of fidelity and dispersal in migratory populations, and secondly in identifying the mechanisms that generate these patterns (Shuter et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Wet season range fidelity in a tropical migratory ungulate

Morrison

Bolger

2012

Journal of Animal Ecology

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Summary1. In migratory populations, the degree of fidelity and dispersal among seasonal ranges is an important population process with consequences for demography, management, sensitivity to habitat change and adaptation to local environmental conditions. 2. Characterizing patterns of range fidelity in ungulates, however, has remained challenging because of the difficulties of following large numbers of marked individuals across multiple migratory cycles and of identifying the appropriate scale of analysis. 3. We examined fidelity to wet season (i.e. breeding) ranges in a recently declining population of wildebeest Connochaetes taurinus Burchell in northern Tanzania across 3 years. We used computer-assisted photographic identification and capture-recapture to characterize return patterns to three wet season ranges that were ecologically discrete and topographically isolated from one another. 4. Among 2557 uniquely identified adult wildebeest, we observed 150 recaptures across consecutive wet seasons. Between the two migratory subpopulations, the probability of remaining faithful to wet season areas ranged between 0AE82 and 1AE00. Animals from a non-migratory segment of the population (near Lake Manyara National Park) were rarely observed in other wet season ranges, despite proximity to one of the migratory pathways. 5. We found no effect of sex on an individuals' probability of switching wet season ranges. However, the breeding status of females in year i had a strong influence on patterns of range selection in year i + 1, with surviving breeders over three times as likely to switch ranges as non-breeders. 6. Social-group associations between pairs of recaptured animals were random with respect to an individual's wet season range during the previous or forthcoming wet seasons, suggesting that an individual's herd identity during the dry season does not predict wet season range selection. 7. Examining fidelity and dispersal in terrestrial migrations improves our understanding of the constraints that migrants experience when they face rapid habitat changes or fluctuations in environmental conditions.

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Conservation and management of migratory species

Cited by 32 publications

References 0 publications

Conserving a moving target: planning protection for a migratory species as its distribution changes

Conserving a moving target: planning protection for a migratory species as its distribution changes

Male post‐breeding movements and stopover habitat selection of an endangered short‐distance migrant, the Little Bustard Tetrax tetrax

Wet season range fidelity in a tropical migratory ungulate

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