Pacific Science, Volume 64, Number 1, 2010

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    Pantala flavescens (Insecta: Odonata) Rides West Winds into Ngulu Atoll, Micronesia: Evidence of Seasonality and Wind-Assisted Dispersal.
    (Honolulu, University of Hawaii Press, 2010-01) Buden, Donald W.
    Observations of the dragonfly Pantala flavescens (Fabricius) on Ngulu Island during early August 2008 constitute the first report of Odonata on Ngulu Atoll, Yap State, Federated States of Micronesia; no other odonate is documented on the atoll, but descriptions by local residents of a larger, rarely encountered, blue dragonfly may pertain to Anax guttatus (Burmeister). The sudden appearance of P. flavescens on Ngulu after its apparent absence during the previous two and a half weeks of this study, together with the absence of exuviae at potential breeding sites and remarks by local residents alluding to its appearance each year around August and September, suggests that it occurs regularly in migration and that there is no permanent resident population. Its appearance often coincides with winds from a westerly direction.
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    Helminths of Ten Species of Geckos (Squamata: Gekkonidae) from Papua New Guinea, with Comparisons between Immigrant and Endemic Geckos.
    (Honolulu, University of Hawaii Press, 2010-01) Goldberg, Stephen R. ; Bursey, Charles R. ; Kraus, Fred
    Two hundred three individuals representing 10 species of gekkonid lizards from Papua New Guinea collected from 2002 to 2005 were examined for helminths: Cyrtodactylus epiroticus ðn ¼ 2Þ, C. klugei ðn ¼ 2Þ, C. loriae ðn ¼ 7Þ, C. novaeguineae ðn ¼ 3Þ, C. sermowaiensis ðn ¼ 30Þ, Gehyra mutilata ðn ¼ 22Þ, G. oceanica ðn ¼ 27Þ, Gekko vittatus ðn ¼ 41Þ, Hemidactylus frenatus ðn ¼ 29Þ, and Lepidodactylus lugubris ðn ¼ 40Þ. One species of Digenea, one species of Cestoda, 18 species of Nematoda, as well as three taxa of nematode larvae (in cysts) were found. Thirty-one new host records and six new locality (¼ country) records are reported. Prevalence in endemic geckos was significantly higher than in nonendemic geckos.
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    Immature East Pacific Green Turtles (Chelonia mydas) Use Multiple Foraging Areas off the Pacific Coast of Baja California Sur, Mexico: First Evidence from Mark-Recapture Data.
    (Honolulu, University of Hawaii Press, 2010-01) Senko, Jesse ; Lopez-Castro, Melania C. ; Koch, Volker ; Nichols, Wallace J.
    Since 2001, Grupo Tortuguero has been conducting monthly inwater monitoring of East Pacific green turtles (Chelonia mydas), also known as black turtles, at four neritic foraging areas (Bahı´a Magdalena, Laguna San Ignacio, Punta Abreojos, Laguna Ojo de Liebre) along the Pacific coast of Baja California Sur, Mexico. Extensive tagging (883 turtles tagged of 1,183 turtles captured) and recaptures (154 tagged turtles recaptured at least once) at these four areas suggest that immature East Pacific green turtles show strong site fidelity to their neritic foraging grounds. However, in 2007, we recaptured two immature turtles, one in Laguna San Ignacio and the other in Bahı´a Magdalena, that were both originally captured in Punta Abreojos. To our knowledge, this represents the first direct evidence of immature East Pacific green turtles using multiple foraging areas along the Baja California Peninsula. This report highlights the importance of long-term monitoring efforts that encompass several habitats on a relatively large spatial scale (@80 km between Punta Abreojos and Laguna San Ignacio and @300 km between Punta Abreojos and Bahı´a Magdalena) to better understand the movements and habitat use of immature East Pacific green turtles on their neritic foraging areas.
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    Water-Quality Variables across Sekisei Reef, A Large Reef Complex in Southwestern Japan.
    (Honolulu, University of Hawaii Press, 2010-01) Morimoto, Naoko ; Furushima, Yasuo ; Nagao, Masayuki ; Irie, Takahiro ; Iguchi, Akira ; Suzuki, Atsushi ; Sakai, Kazuhiko
    At Sekisei Reef in southwestern Japan (24_ N), coral cover dramatically decreased in the mid-1980s, probably due to a population outbreak of the coral predator Acanthaster planci. Coral communities subsequently recovered well outside the semiclosed lagoon, but recovery has been poor inside it. Hence, water-quality degradation including eutrophication has been a concern inside the lagoon. In addition, temporal variation in eutrophication parameters is common among high-latitude coral reefs, resulting in difficulties in evaluating them. Therefore, to address these issues, we monitored temperature, salinity, turbidity, chlorophyll-a, NOx -N (NO3-N þ NO2-N), and NH4-N concentrations year-round across the lagoon at Sekisei Reef. Turbidity and NOx-N concentration increased with increasing wind velocity, suggesting that variation in turbidity and NOx-N concentrations was attributed to resuspension of bottom sediments, and NOx-N release through regeneration processes of microorganisms from the sediments and reef frameworks, respectively. In contrast, variation in chlorophyll-a and NH4-N concentrations appears to be mainly controlled by the seasonality of temperature and irradiance. Long retention time of seawater inside the lagoon seems to have enhanced NH4-N assimilation and increase of phytoplankton during summer. Inside the lagoon, turbidity, NOx-N, and summer chlorophyll-a concentrations were higher, and variation in temperature was larger than outside it. Although water quality appears not to be seriously degraded, multiple effects of these water-quality variables might have negatively affected recovery of coral communities inside the lagoon. Recent expansion
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    Temporal Changes in Reef Community Structure at Bintan Island (Indonesia) Suggest Need for Integrated Management.
    (Honolulu, University of Hawaii Press, 2010-01) Chou, Loke Ming ; Huang, Danwei ; Tun, Karenne P.P. ; Kwik, Jeffrey T.B. ; Tay, Ywee Chieh ; Seow, Angie L.
    Reefs in Southeast Asia, such as those in Indonesia’s Riau archipelago, are among the most diverse habitats in the sea, but limited baseline data pose a severe challenge for their conservation. Here, we surveyed five reef sites along the northern coast of Bintan Island to determine the most recent condition of the benthic and fish communities. Fourteen years of resort development on the island have elapsed since the last survey in 1993. Using several diversity measures to compare the reefs then and in 2007, we found that abundances of hard corals and fish remained high (average of >50% coral cover and >0.7 fish/m3), but taxonomic richness was compromised. The most common taxa now account for greater proportions of fish counts at all sites and of coral cover at three of four comparable sites. These shifts in coral and fish assemblages may be explained by freshwater influences and development along the north coast of Bintan Island. Because the local community and tourism industry still rely heavily on the reefs, we advocate implementing a comprehensive, integrated coastal management plan that mitigates further reef declines and promotes sustainable use.