Demography and Migratory Patterns of the Eastern Long-Toed Salamander, Ambystoma macrodactylum columbianum

Beneski, John T.; Zalisko, Edward J.

doi:10.2307/1444998

Cited by 30 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Both of these species tend to be opportunistic breeders, with eggs and larvae often found in disturbed areas, such as newly formed (Leonard et al 1993;Hamilton et al 1998), recently disturbed (Corkran andThoms 2006), and human influenced (Beneski et al 1986;Llewellyn and Peterson 1998;Monello and Wright 1999) ponds. The trend found in our study may be a result of their ability to quickly colonize newly created or recently disturbed sites.…”

Section: Discussionmentioning

confidence: 99%

Assessing habitat requirements of pond-breeding amphibians in a highly urbanized landscape: implications for management

2016

View full text Add to dashboard Cite

Management of urban aquatic habitats for native wildlife, such as amphibians, is an important contemporary goal for many municipalities. However, our understanding of how local and landscape characteristics of urban aquatic habitat promote or inhibit amphibian occupancy and recruitment is limited. In this study, we examined amphibian community composition and occurrence patterns in ponds, wetlands, and swales of Gresham, Oregon. We collected occurrence data for five native amphibians: northwestern salamander (Ambystoma gracile), long-toed salamander (A. macrodactylum), Pacific chorus frog (Pseudacris regilla), northern red-legged frog (Rana aurora aurora), and rough-skinned newt (Taricha granulosa) as well as one non-native amphibian, the American bullfrog (Lithobates catesbeianus). One hundred sites were surveyed from 2007 to 2013. Local and landscape attributes were characterized for each site, and potential drivers of species occupancy were evaluated using a combination of multivariate approaches and generalized linear models. In general, percent impervious surface and distance to nearest forest patch, both associated with urbanization, were negatively correlated with site occupancy for all species. Non-native vegetation was also negatively associated with occupancy of three species (long-toed salamanders, Pacific chorus frogs, and northern red-legged frogs). In contrast, occupancy was positively correlated with pond depth and hydroperiod length for all species. We found evidence of two distinct groups of co-occurring amphibian species driven by habitat depth Urban Ecosyst and hydroperiod. Finally, we report results of threshold analyses that examined speciesspecific habitat associations. This study describes urban habitat associations of a native amphibian community, identifies factors with positive, negative or mixed relationships with amphibian species, and is an important step in informing the management of urban aquatic habitat to promote persistence of native amphibians.

show abstract

Section: Discussionmentioning

confidence: 99%

Assessing habitat requirements of pond-breeding amphibians in a highly urbanized landscape: implications for management

2016

View full text Add to dashboard Cite

show abstract

“…Immediately following a trial, the subject was placed in a 2 fluid ounce (1 fluid ounce = 29.6 cm 3 ) bath of dechlorinated water for 2 min. This water was applied as a mist over the test arena in preparation for the next subject to (i) offset any singular pheromone trails left behind from the trial and (ii) mimic the wet conditions that promote Long-toed Salamander dispersal (Beneski et al 1986).…”

Section: Substrate Resistancementioning

confidence: 99%

“…However, if dispersing individuals make decisions based on the direction or ease of reaching a particular target (e.g., Sjögren-Gulve 1998), then observed patterns of population connectivity may deviate widely from predictions based on the distribution of suitable habitat alone. Several studies have reported amphibian movement through habitat that is generally considered unsuitable for long-term persistence (Beneski et al 1986;Graham 1997;Pilliod et al 2002;Bulger et al 2003). These movements may be particularly important for dispersal if they occur in habitats that are easy to traverse and if the low suitability of these habitats prompts individuals to continue moving in search of more suitable conditions (Raymond and Hardy 1991;Rosenberg et al 1998).…”

Section: Fig 3 Number Of Long-toed Salamanders (Ambystoma Macrodactmentioning

confidence: 99%

Conflicting effects of microhabitats on Long-toed Salamander (Ambystomamacrodactylum) movement: implications for landscape connectivity

2015

View full text Add to dashboard Cite

Understanding dispersal requires multiple lines of investigation, from the study of broad patterns of population connectivity to the identification of factors impacting movement at local scales. To determine the potential effects of different microhabitats on dispersal in the Long-toed Salamander (Ambystoma macrodactylum Baird, 1850), we experimentally evaluated mobility, moisture loss, and habitat choice in response to five common substrates (deciduous and coniferous leaf litter, grass, moss, and sand). Specifically, we examined differences in the efficiency with which salamanders moved across substrates when motivated to move. We then quantified moisture loss in each substrate and evaluated habitat preference. Our results point to a trade-off between substrates that are easily traversed and those that offer high protection against desiccation. Habitat choice appeared to balance these two aspects of performance, with salamanders favouring a substrate that offered both low resistance to movement and high protection against desiccation. This result was context-dependent, as preferences shifted towards wetter but less easily traversed substrates when supplemental cover objects were made available. Overall, our study highlights the potential for individuals to respond to a given substrate in ways that can both facilitate and limit dispersal and thus underscores the need to consider different aspects of individual performance and behaviour when studying population connectivity.Résumé : La compréhension de la dispersion requiert une approche à plusieurs volets, de l'étude des grands motifs de connectivité des populations à la détermination des facteurs qui influencent les déplacements à l'échelle locale. Afin de déterminer les effets potentiels de différents microhabitats sur la dispersion chez la salamandre à longs doigts (Ambystoma macrodactylum Baird, 1850), nous avons évalué expérimentalement la mobilité, la perte d'humidité et le choix de l'habitat en réaction à cinq substrats courants (litières de feuillus et de conifères, herbe, mousse et sable). Plus précisément, nous avons examiné les variations de l'efficacité avec laquelle les salamandres se déplaçaient sur différents substrats quand elles étaient motivées à le faire. Nous avons ensuite quantifié la perte d'humidité dans chaque substrat et évalué les préférences en matière d'habitat. Nos résultats semblent indiquer un compromis entre les substrats qui sont faciles à traverser et ceux qui offrent une bonne protection contre la dessiccation. Le choix de l'habitat semblait reposer sur un équilibre entre ces deux aspects de la performance, les salamandres privilégiant un substrat qui offrait tant une faible résistance au déplacement qu'une bonne protection contre la dessiccation. Ce résultat dépend du contexte, la préférence allant à des substrats plus humides, mais moins faciles à traverser quand des objets offrant un couvert additionnel étaient fournis. Globalement, l'étude fait ressortir le potentiel des individus de réagir à un substrat donné de manière aus...

show abstract

“…Adults reside on land in more or less inaccessible subterranean burrows when not breeding (Verrell and Davis, 2003). In late winter-early spring (January to March), both sexes migrate to aquatic sites such as ponds within which they court, mate and lay eggs (Beneski et al, 1986;Verrell and Pelton, 1996;Verrell et al, 2001). Individual males may remain in the water for a few weeks, females for no more than a few days (Verrell and Pelton, 1996).…”

Section: Receivedmentioning

confidence: 99%

Short Notes

Arntzen¹,

Goudie

Halley

et al. 2004

Amphib Reptilia

View full text Add to dashboard Cite

Demography and Migratory Patterns of the Eastern Long-Toed Salamander, Ambystoma macrodactylum columbianum

Cited by 30 publications

References 21 publications

Assessing habitat requirements of pond-breeding amphibians in a highly urbanized landscape: implications for management

Assessing habitat requirements of pond-breeding amphibians in a highly urbanized landscape: implications for management

Conflicting effects of microhabitats on Long-toed Salamander (Ambystomamacrodactylum) movement: implications for landscape connectivity

Short Notes

Contact Info

Product

Resources

About