表一、海生所 104 學年專題討論(一) 摘要表
IMB 104 Seminar (I) Abstract form
報告日期/Date：2015 年/year 12 月/month 2 日/day
班別/學生姓名：海洋生物 碩二 黃品則
Class/Name:
題目 Title：Evaluating the importance of Marine Protected Areas for the
conservation of hawksbill turtles Eretmochelys imbricatanesting in the
Dominican Republic
作 者 Author(s): Ohiana Revuelta, Lucy Hawkes, Yolanda M. León,
Brendan J. Godley, Juan A. Raga, Jesús Tomás
期刊 Journal name: ENDANGERED SPECIES RESEARCH
期頁數 Issue and page nos: Vol. 27: 169–180, 2015
摘要 Abstract:
Understanding spatial and temporal habitat-use patterns to protect both
foraging
and breeding grounds of species of concern is crucial for successful
conservation. Saona Island in
Del Este National Park (DENP), south-eastern Dominican Republic (DR),
hosts the only major
hawksbill (Eretmochelys imbricata) nesting area in the DR (100 nests yr
−1
, SD = 8.4, range =
93−111), with the population having been critically reduced through
hunting. We satellite tracked
9 female hawksbill turtles, and present analyses of their core-use areas
with respect to Marine
Protected Areas (MPAs) in both their internesting and foraging areas.
Kernel utilization distributions indicated that during the internesting
period all turtles remained close to their nesting
beaches in small home ranges in the territorial waters of the DR, mostly
over the continental shelf
(<200 m depth). Common core-use areas were located inside the DENP,
and 82.7% of all locations
were within the DENP. In foraging areas, only 23% of locations were
inside MPAs, either in waters
of the DR or in waters of the Bahamas, Nicaragua and Honduras. Our
results highlight that the
protected areas of the DR are vital for hawksbill conservation, and the
enforcement of existing legislation governing protected areas in the
country is crucial. The present study also corroborates
that the waters off Nicaragua and Honduras are exceptionally important
foraging areas for
hawksbills in the Caribbean, showing the turtle’s vulnerability in these
waters
題目 Title：Ecological Correlates of Green Turtle (Chelonia mydas)
Abundance on the Nearshore Worm Reefs of Southeastern
Florida
作者 Author(s): Melanie Stadler, Michael Salmon, and Charles Roberts
期刊 Journal name: Journal of Coastal Research
期頁數 Issue and page nos: 31 2 244–254
摘要 Abstract:
Juvenile green turtles (Chelonia mydas) differ in abundance on nearshore
reefs, but why some sites are preferred over
others is unknown. Our study had two objectives: to quantify site-specific
differences in turtle abundance over time (1 y)
and to determine what ecological factors were correlated with those
differences. We conducted quarterly surveys on reefs
in Palm Beach and Broward Counties, Florida, and compared reef sites
with respect to (1) water depth, (2) algal
abundance, (3) algal species richness, and (4) fluctuations in reef area
caused by sand burial (which kills the algae used
as forage by the turtles). Turtles were most abundant on reefs located in
shallow water and exposed to bright ambient
light. More turtles were also seen at sites where algae were both abundant
and composed of many species. Reefs with
those characteristics tended to remain uncovered by sand (‘‘stable’’) for
longer time periods. We hypothesize that
foraging by turtles on preferred reefs may prevent any one species of algae
from dominating the site, making room for
others to colonize. If true, then both physical stability (reef exposure time)
and biological activity (turtle grazing) may
make some reefs more attractive to turtles than others