scholarly journals Habitat use and seed removal by invasive rats ( Rattus rattus ) in disturbed and undisturbed rain forest, Puerto Rico

Biotropica ◽  
2019 ◽  
Vol 51 (3) ◽  
pp. 378-386 ◽  
Author(s):  
Aaron B. Shiels ◽  
Gabriela E. Ramírez de Arellano
Keyword(s):  
Puerto Rico ◽  
Habitat Use ◽  
Rain Forest ◽  
Rattus Rattus ◽  
Seed Removal ◽  
Invasive Rats

Predation on green sea turtle, Chelonia mydas, hatchlings by invasive rats

2019 ◽  
Vol 25 (4) ◽  
pp. 423 ◽  
Author(s):  
Markus Gronwald ◽  
Quentin Genet ◽  
Margaux Touron
Keyword(s):  
Food Source ◽  
Sea Turtles ◽  
Rattus Rattus ◽  
Chelonia Mydas ◽  
Sea Turtle ◽  
French Polynesia ◽  
Camera Traps ◽  
Green Sea Turtle ◽  
Green Sea Turtles ◽  
Invasive Rats

We used camera traps to identify invasive Rattus rattus as predators at a green sea turtle, Chelonia mydas, nest in French Polynesia. The footage shows that the hatchlings are a familiar food source for rats and that the control of invasive rats has to be considered for the protection of endangered green sea turtles.

scholarly journals Evaporation from a tropical rain forest, Luquillo Experimental Forest, eastern Puerto Rico

2000 ◽  
Vol 36 (8) ◽  
pp. 2183-2196 ◽  
Author(s):  
J. Schellekens ◽  
L. A. Bruijnzeel ◽  
F. N. Scatena ◽  
N. J. Bink ◽  
F. Holwerda
Keyword(s):  
Puerto Rico ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Luquillo Experimental Forest

Spool-and-line studies on the behavioural ecology of rats (Rattus spp.) in the Galápagos Islands

1996 ◽  
Vol 74 (4) ◽  
pp. 733-737 ◽  
Author(s):  
Gillian E. Key ◽  
Richard D. Woods
Keyword(s):  
Habitat Use ◽  
Vegetation Structure ◽  
Rattus Rattus ◽  
Behavioural Ecology ◽  
Radio Tracking ◽  
Galápagos Islands ◽  
Santa Cruz Island ◽  
Santa Cruz ◽  
Total Length ◽  
Significant Difference

The spool-and-line technique has been neglected in the study of the behavioural ecology of mammals. It has advantages over the more widely used method of radio tracking in terms of cost and depth of detail in the data obtained, despite its limitations. A spool and line was used to study habitat use of two species of Rattus on Santa Cruz Island, Galápagos, in areas of sympatry and allopatry. Significantly longer total spool lines were collected from R. rattus than R. norvegicus, and R. rattus also climbed trees significantly more. Significantly longer spool lines were collected from female than male R. rattus, and rats caught in the morning spent significantly more time on the ground than those caught at night. The method of handling and the occasion of capture (first, second, or third) had no significant effect on either the total length of spool line collected or the proportion of time spent on the ground. Arboreality in R. rattus was compared with that in R. norvegicus between areas of sympatry and allopatry, and a significant difference was found between sites in terms of both the total length of spool line collected and the proportion of time spent on the ground. Rattus rattus was least arboreal at site D, an area of allopatry, and most arboreal at site B, where the fewest trees occurred, suggesting that factors other than vegetation structure influence arboreality. The use of spool-and-line devices in the study of behavioural ecology is discussed.

scholarly journals Hurricane Hugo: damage to a tropical rain forest in Puerto Rico

1992 ◽  
Vol 8 (01) ◽  
pp. 47-55 ◽  
Author(s):  
Khadga Basnet ◽  
Gene E. Likens ◽  
F. N. Scatena ◽  
Ariel E. Lugo
Keyword(s):  
Puerto Rico ◽  
Rain Forest ◽  
Tropical Rain Forest ◽  
Severe Damage ◽  
Luquillo Experimental Forest ◽  
Size Classes ◽  
The North ◽  
Large Trees ◽  
Root Grafts ◽  
Hurricane Hugo

ABSTRACTHurricane Hugo of September 1989 caused severe damage to the rain forest in the north-rust corner of Puerto Rico. We assessed the severity of damage distributed in space, species, and size-classes of trees in the Bisley Watersheds of the Luquillo Experimental Forest. We analyzed pie- and post-hurricane data for vegetation from transects established in 1987 and 1988. The severity of damage was significantly greater in valleys than on ridges and slopes. All the species exceptDacryodes excelsa, Sloanea berteriana, andGuarea guidoniashowed 100% severe damage. Large trees (> 70 cm DBH) were highly susceptible to hurricane damage, but there was no clear pattern in the small size-classes.D. excelsa(tabonuco) was the most resistant to damage by the hurricane. Tabonuco which has extensive root-grafts and root anchorage to bedrock and subsurficial rocks, apparently can survive frequent hurricanes and continue as a dominant species in this montane tropical rain forest. The high frequency of hurricanes, which can override other ecological and topographic factors, may largely determine the overall spatial pattern of species in this rain forest.

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