Orientation Cues Used by Hatchling Loggerhead Sea Turtles (<i>Caretta caretta</i> L.) During their Offshore Migration

Salmon, Michael; Lohmann, Kenneth J.

doi:10.1111/j.1439-0310.1989.tb00530.x

Cited by 49 publications

(9 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 1 Williams , 2 Masclaux et al , 3 Prospero , 4 Mahowald et al , 5 Shi et al , 6 Hajrasuliha et al , 7 Bai et al , 8 Chaiwanakupt and Robertson , 9 Webster et al , 10 Stephens et al , 11 Cothran et al , 12 Junker and Cross , 13 Minakawa and Gara , 14 Sullivan et al , 15 Waters , 16 Brittain and Eikeland , 17 Cross et al , 18 Cross et al , 19 Veldboom and Haro , 20 Petrone et al , 21 McDowell and Sharpley , 22 Wolanski et al , 23 Coale et al , 24 Slomp and Van Cappellen , 25 de Baar et al , 26 Sterner et al , 27 Elser and Hassett , 28 Royer et al , 29 Falkowski et al , 30 Hopkinson et al , 31 Salmon and Lohmann , 32 Salmon et al , 33 Bouchard and Bjorndal , 34 Müller , 35 Griffith et al , 36 Muehlbauer et al , 37 Veldboom and Haro , 38 Heywood , 39 Kohler et al , 40 Jonsson and Jonsson , 41 Rüegg et al , 42 Helfield and Naiman , 43 Chaloner et al , 44 Tiegs et al , 45 Mobæk et al , 46 Geremia et al , 47 Thomas et al , 48 Senft et al , 49 Ruess and McNaughton , 50 Van Uytvanck et al , 51 Sitters et al , 52 Kitchell et al , 53 Gauthier et al , 54 Liu et al , 55 Weimerskirch et al , 56 Ballance et al , 57 Wakefield et al , 58 Maron et al .…”

Section: Impacts Of Spatial and Temporal Scales On The Stoichiometry mentioning

confidence: 99%

Spatial stoichiometry: cross‐ecosystem material flows and their impact on recipient ecosystems and organisms

Sitters

Atkinson

Guelzow

et al. 2015

Oikos

View full text Add to dashboard Cite

Cross-ecosystem material flows, in the form of inorganic nutrients, detritus and organisms, spatially connect ecosystems and impact food web dynamics. To date research on material flows has focused on the impact of the quantity of these flows and largely ignored their elemental composition, or quality. However, the ratios of elements like carbon, nitrogen and phosphorus can influence the impact material flows have on food web interactions through stoichiometric mismatches between resources and consumers. The type and movement of materials likely vary in their ability to change stoichiometric constraints within the recipient ecosystem and materials may undergo changes in their own stoichiometry during transport. In this literature review we evaluate the importance of cross-ecosystem material flows within the framework of ecological stoichiometry. We explore how movement in space and time impacts the stoichiometry of material flow, as these transformations are essential to consider when assessing the ability of these flows to impact food web productivity and ecosystem functioning. Our review suggests that stoichiometry of cross-ecosystem material flows are highly dynamic and undergo changes during transport across the landscape or from human influence. These material flows can impact recipient organisms if they change stoichiometry of the abiotic medium, or provide resources that have a different stoichiometry to in situ resources. They might also alter consumer excretion rates, in turn altering the availability of nutrients in the recipient ecosystem. These alterations in stoichiometric constraints of recipient organisms can have cascading trophic effects and shape food web dynamics. We highlight significant gaps in the literature and suggest new avenues for research that explore how cross-ecosystem material flows impact recipient ecosystems when considering differences in stoichiometric quality, their movement through the landscape and across ecosystem boundaries, and the nutritional constraints of the recipient organisms.

show abstract

Section: Impacts Of Spatial and Temporal Scales On The Stoichiometry mentioning

confidence: 99%

Spatial stoichiometry: cross‐ecosystem material flows and their impact on recipient ecosystems and organisms

Sitters

Atkinson

Guelzow

et al. 2015

Oikos

View full text Add to dashboard Cite

show abstract

“…three grid cells) are assumed to be within the area swum by hatchlings during their first 24 h at sea (Salmon and Wyneken, 1987;Witherington, 2002). It is acknowledged that research on the east coast of the USA has demonstrated that marine turtle hatchlings use wave cues for a relatively short period of the swimming frenzy before switching to a magnetic compass (Salmon and Lohmann, 1989;Lohmann and Lohmann, 1992). However, wind speed and direction calculated across the three grid cells (12 km) represent near-shore coastal conditions relevant to hatchling dispersal.…”

Section: Sea Turtle Nesting Sitesmentioning

confidence: 99%

Relative Exposure Index: an important factor in sea turtle nesting distribution

Santana‐Garcon

Grech

Moloney

et al. 2009

Aquatic Conservation

View full text Add to dashboard Cite

ABSTRACT1. The threatened status of many sea turtle populations and their vulnerability to coastal development and predicted climate change emphasize the importance of understanding the role of environmental factors in their distribution and ecological processes. The factors driving the distribution of sea turtle nesting sites at a broad spatial scale is poorly understood.2. In light of the lack of understanding about physical factors that drive the distribution of turtle nesting, the relationship between nesting site distribution and the exposure of coastal areas to wind and wind-generated waves was analysed. To achieve this, a Relative Exposure Index (REI) was developed for an extensive area in northeastern Australia and values of the index for nesting sites of five different sea turtle species and randomly selected non-nesting sites were compared.3. Although there are differences between species, the results show that sea turtles nest in areas of higher REI values suggesting that wind exposure is related to the spatial distribution of sea turtle nesting sites, and it may also influence nest site selection in female turtles and/or the dispersal of hatchlings towards oceanic currents.4. The combination of these results with further research on other driving environmental factors, like oceanic currents, has the potential to allow for the identification and prediction of future nesting sites, for which conservation and management may become essential.

show abstract

“…We therefore used a second behavioural assay to determine whether turtles in both groups could respond appropriately to non-magnetic cues. Previous work has demonstrated that hatchlings swim directly into waves when they leave the beach, a response that guides turtles away from shore and towards the open ocean [22][23][24][25]. Additionally, turtles determine wave vertical coil power supply horizontal coil power supply cable from digital encoder computer Figure 2.…”

Section: (E) Wave Orientation Testsmentioning

confidence: 99%

The geomagnetic environment in which sea turtle eggs incubate affects subsequent magnetic navigation behaviour of hatchlings

et al. 2014

Self Cite

View full text Add to dashboard Cite

Loggerhead sea turtle hatchlings (Caretta caretta) use regional magnetic fields as open-ocean navigational markers during trans-oceanic migrations. Little is known, however, about the ontogeny of this behaviour. As a first step towards investigating whether the magnetic environment in which hatchlings develop affects subsequent magnetic orientation behaviour, eggs deposited by nesting female loggerheads were permitted to develop in situ either in the natural ambient magnetic field or in a magnetic field distorted by magnets placed around the nest. In orientation experiments, hatchlings that developed in the normal ambient field oriented approximately south when exposed to a field that exists near the northern coast of Portugal, a direction consistent with their migratory route in the northeastern Atlantic. By contrast, hatchlings that developed in a distorted magnetic field had orientation indistinguishable from random when tested in the same north Portugal field. No differences existed between the two groups in orientation assays involving responses to orbital movements of waves or sea-finding, neither of which involves magnetic field perception. These findings, to our knowledge, demonstrate for the first time that the magnetic environment present during early development can influence the magnetic orientation behaviour of a neonatal migratory animal.

show abstract

Orientation Cues Used by Hatchling Loggerhead Sea Turtles (Caretta caretta L.) During their Offshore Migration

Cited by 49 publications

References 21 publications

Spatial stoichiometry: cross‐ecosystem material flows and their impact on recipient ecosystems and organisms

Spatial stoichiometry: cross‐ecosystem material flows and their impact on recipient ecosystems and organisms

Relative Exposure Index: an important factor in sea turtle nesting distribution

The geomagnetic environment in which sea turtle eggs incubate affects subsequent magnetic navigation behaviour of hatchlings

Contact Info

Product

Resources

About