NDLI: Regional-scale patterns of habitat preference for the seahorse Hippocampus reidi in the tropical estuarine environment

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Regional-scale patterns of habitat preference for the seahorse Hippocampus reidi in the tropical estuarine environment

Content Provider	Springer Nature Link
Author	Aylesworth, L. A. Xavier, J. H. Oliveira, T. P. R. Terio, G. D. Diniz, A. F. Rosa, I. L.
Copyright Year	2015
Abstract	When dealing with species where local information on distribution and habitat preferences is insufficient or lacking (data poor), it is challenging for managers to determine effective measures for conservation. The purpose of this paper was to identify trends in habitat preference for a data-deficient seahorse species, Hippocampus reidi in northeastern Brazil. This is also the first study to use mixed-effect models to compare multiple datasets at a regional level for any seahorse species. Generalized linear mixed-effects models determined that shallow depths, warm temperatures and the number of holdfasts were the most important habitat variables in predicting seahorse presence in tropical estuaries. A log-likelihood ratio *G test found no difference between the proportion of adults and juveniles using various holdfasts, although adults used a greater diversity of holdfasts. The lack of difference in adult and juvenile habitat suggests either that H. reidi may not experience ontogenetic shifts in habitat or that habitat is not determining the distribution patterns of adults and juveniles within estuaries. Alternatively, habitat preference may be coupled with other factors to drive seahorse distribution within estuaries. Due to estuary importance in providing holdfast diversity and other conditions to seahorse use, conservation and management for H. reidi should also consider appropriate protection of estuarine areas, thus safeguarding habitat for both juveniles and adults.
Starting Page	499
Ending Page	512
Page Count	14
File Format	PDF
ISSN	13862588
Journal	Aquatic Ecology
Volume Number	49
Issue Number	4
e-ISSN	15735125
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-09-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Syngnathids Brazil Mangrove Ecology Mixed effects Data-poor Freshwater & Marine Ecology Ecosystems
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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