There are three species of Neotropical cats whose northernmost distribution reaches the USA-Mexico border region: the jaguar Panthera onca, ocelot Leopardus pardalis and jaguarundi Herpailurus yagouaroundi. To ensure the long-term viability of Neotropical cat populations in this region it is imperative to identify current distribution and status in the northern limits of their range to conserve...

The seasonal occurrence of white sharks visiting Gansbaai, South Africa was investigated from 2007 to 2011 using sightings from white shark cage diving boats. Generalized linear models were used to investigate the number of great white sharks sighted per trip in relation to sex, month, sea surface temperature and Multivariate El Niño/Southern Oscillation (ENSO) Indices (MEI). Water conditions a...

Reunion Island in the south-west Indian Ocean once had significant nesting populations of marine turtles but they declined rapidly after human colonization. In 1996, after regular sightings of turtles offshore, an aerial survey programme was initiated to monitor the occurrence of marine turtles and their distribution along the west coast of the island. Between 1998 and 2008, along a 30-km coast...

Population Identity: Based on studies of mitochondrial DNA, Cook Inlet belugas are genetically distinct from the other four beluga populations that occur in western and northern Alaska (O’Corry-Crowe et al. 1997; O’Corry-Crowe, pers. comm.). There have been only two beluga sightings recorded in the region between Cook Inlet and the nearest beluga population in Bristol Bay (Frost and Lowry 1990;...

Background: The sub-Antarctic Prince Edward Archipelago (46°53’S, 37°52’E), consisting of Marion and Prince Edward islands, is situated in the Indian sector of the Southern Ocean, approximately 2 600 km away from the closest Adélie penguin (Pygoscelis adeliae) breeding locality, Bouvet Island (54°25’S; 3°22’E). Methods: Two opportunistic sightings of an Adélie penguin at Marion Island on 28 Oct...

Stephen B. Reilly Southwest Fisheries Science Center. National Marine Fisheries Service. NOM P. O. Box 27'. La Jolla. CA 92038 Interannual variability of dolphin habitats in the eastern tropical Pacific. II: Effects on abundances estimated from tuna vessel sightings, 1975-1990 Abstract.-The results of a canonical correspondence analysis (CCA) of data from research vessel surveys of the eastern ...

The presence of Nycticebus coucang in Singapore is doubtful, and there have been publications expressing such doubts. This study tries to establish the presence of native lorises in Singapore, and the possibilites that sightings might be escapees. Night surveys, craniometric tests to compare lorises from the regions surrounding Singapore, and external morphology comparisons from photographs wer...

Boakes et al. compile and analyze a historical dataset of 170,000 bird sightings over two centuries and show how changing trends in data gathering may confound a true picture of biodiversity change.

5 Introduction Background 6 Comparison of predictive ability between modelling techniques 9 ‘False’ Absences 11 Study area 11 The harbour porpoise (Phocoena phocoena) 12 Materials and Methods Data collection 13 Estimating position of sightings 14 Track and surveyed grid cells 14 Presence and Absence cells 15 Data partitioning 16 Ecogeographic data 16 1) PCA-based technique 17 PCA-intra-model ev...

Sightings of dwarf (Kogia sima) and pygmy (K. breviceps) sperm whales in Hawaiian waters have only rarely been reported. As part of boat-based surveys of odontocete cetaceans around the main Hawaiian Islands between 2000 and 2003, Kogia were observed on 18 occasions. Kogia were sighted most frequently in deeper portions of the study area (mean depth, 1,425 m) and in calm sea conditions (mean Be...