Congeneric Species Distribution and Abundance in a Three-Dimensional Habitat: The Rain Forest Anoles of Puerto Rico

Copeia ◽  
1992 ◽  
Vol 1992 (2) ◽  
pp. 392 ◽  
Author(s):  
Douglas P. Reagan
Keyword(s):  
Puerto Rico ◽  
Species Distribution ◽  
Rain Forest ◽  
Three Dimensional ◽  
Congeneric Species

New species of Duplominona Karling, 1966 and Pseudominona Karling, 1978 (Platyhelminthes: Proseriata) from the Caribbean

Zootaxa ◽  
2019 ◽  
Vol 4657 (1) ◽  
pp. 127-147
Author(s):  
MARCO CURINI-GALLETTI ◽  
GIACINTA A. STOCCHINO ◽  
JON L. NORENBURG
Keyword(s):  
Puerto Rico ◽  
New Species ◽  
Puerto Rican ◽  
Copulatory Organ ◽  
Complete Separation ◽  
Congeneric Species ◽  
Caribbean Coast ◽  
Taxonomic Key ◽  
The Caribbean

Nine new species of Duplominona and one new Pseudominona (Platyhelminthes, Proseriata, Monocelididae) are described from the Caribbean coast of Panama and from Puerto Rico.                Duplominona aduncospina n. sp.; D. terdigitata n. sp.; D. pusilla n. sp.; D. bocasana n. sp. (from Panama) and D. dissimilispina n. sp.; D. chicomendesi n. sp.; D. macrocirrus n. sp.; D. diademata n. sp.; D. puertoricana n. sp. (from Puerto Rico) can be distinguished from the numerous congeneric species based on fine details of the sclerotized structures of the copulatory organ. Duplominona aduncospina n. sp. is characterised by a cirrus provided with 3–4 rows of recurve spines, 2–3 μm long. D. terdigitata n. sp. shows a tripartite tail, and needle-shaped cirrus spines, 1.5–9 μm long. Cirrus spines of D. pusilla n. sp. are scale-like, 1.5–3 μm long. D. bocasana n. sp. has triangular spines, 1.5–6 μm long. D. dissimilispina n. sp. has needle-shaped spines, 3.5–15 μm long. D. chicomendesi n. sp. has a small cirrus, with few, strongly curved spines, 2–7.5 μm long. D. macrocirrus n. sp. has a large cirrus, provided with spines 3–9 μm long, with the longest spines placed medially. D. diademata n. sp. has a cirrus with two separate spiny areas, with spines 7–13 μm long. D. puertoricana n. sp. has a very long cirrus, with poorly sclerotised proximal spines, and distal spines to 6 μm long. A taxonomic key of the genus Duplominona is provided. Pseudominona cancan n. sp. from Panama differs from P. dactylifera from Bermuda, the only species known in the genus so far, for its shorter cirrus and fewer, triangular spines 3–5 μm long, and for the position of the vagina, close to mouth. A specimen attributed to P. dactylifera collected in Puerto Rico is described. Distribution of the new species suggests a complete separation of Panamanian and Puerto Rican proseriate fauna, confirming previous reports of restricted ranges and high endemicity of mesopsammic Platyhelminthes. 

scholarly journals Spatial patterns of tree species distribution in New Guinea primary and secondary lowland rain forest

2016 ◽  
Vol 27 (2) ◽  
pp. 328-339 ◽  
Author(s):  
Pavel Fibich ◽  
Jan Lepš ◽  
Vojtěch Novotný ◽  
Petr Klimeš ◽  
Jakub Těšitel ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Species Distribution ◽  
Tree Species ◽  
Rain Forest ◽  
New Guinea ◽  
Lowland Rain Forest

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

Species associations of congeneric species in a tropical seasonal rain forest of China

2016 ◽  
Vol 32 (3) ◽  
pp. 201-212 ◽  
Author(s):  
Guoyu Lan ◽  
Yunbing Zhang ◽  
Fangliang He ◽  
Yuehua Hu ◽  
Hua Zhu ◽  
...  
Keyword(s):  
Species Interactions ◽  
Rain Forest ◽  
Biotic Interactions ◽  
Second Order ◽  
Small Scale ◽  
Order Effects ◽  
Congeneric Species ◽  
First Order ◽  
Large Trees ◽  
Tropical Seasonal Rain Forest

Abstract:In tropical plant communities with diverse species, many congeners are found to coexist. Do environment or biotic interactions structure the coexistence of congeners in tropical forest communities? In this paper, we aimed to disentangle the effect of environment (first-order effects) and species interactions (second-order effects) on the spatial distributions of tree species. We used a classification scheme and torus-translation to test the first-order interaction of 48 species from 17 genera in a fully mapped 20-ha dipterocarp tropical seasonal rain-forest plot in Xishuangbanna, south-west China. Then we used heterogeneous Poisson null models to reveal significant uni- and bivariate second-order interactions. The results demonstrated that (1) 34 of the 48 studied species showed a significant relation with at least one topographic variable. This confirmed that topographical heterogeneity is important for distribution of these congeners. Spatial segregation (36.6%) and partial overlap (34.8%) were the most common bivariate association types in Xishuangbanna plot, which indicated first-order effects (environment) were strong. (2) For small-scale associations, 51% saplings (1 to ≤ 5 cm) (68.8% for large trees with dbh > 5 cm) of the species showed non-significant associations. For large-scale associations, 61.6% saplings (81.2% for large trees) of the species showed non-significant associations. Lack of significant species interactions provides evidence for the unified neutral theory. In conclusion, both environment and biotic interactions structure congeneric species' coexistence in tropical seasonal rain forest in this region.

Exceptionally well-preserved silicified hippuritid rudist bivalves from the lower Maastrichtian of Puerto Rico

2020 ◽  
Vol 20 (18) ◽  
pp. 333-366
Author(s):  
Simon F. Mitchell
Keyword(s):  
Puerto Rico ◽  
New World ◽  
Three Dimensional ◽  
Acid Digestion ◽  
Distinctive Morphology ◽  
New Material ◽  
Lower Maastrichtian ◽  
Rudist Bivalves ◽  
Left And Right ◽  
First Time

Exceptionally well-preserved (silicified) hippuritid rudists occur in the El Rayo Formation (lower Maastrichtian) of south-western Puerto Rico. Three species belonging to three different genera are present: Caribbea muellerreidi (VERMUNT), Laluzia peruviana (GERTH) and Parastroma guitarti (PALMER). Acid digestion of the limestones has resulted in a collection with numerous three-dimensional left and right valves many with the preservation of the minute details of the pore system. The morphological features of each species are described, and many features are illustrated for the first time. The new material, coupled with descriptions from other studies, demonstrates that six genera of endemic hippuritids evolved in two separate radiations in the New World: an older radiation of forms that had pallial canals in their left valves (Barrettia, Whitfieldiella and Parastroma) and a younger radiation of forms lacking pallial canals in their left valves (Laluzia, Caribbea and Praebarrettia). The exquisite preservation also reveals that in these endemic New World hippuritids the sockets for the teeth consisted of slots into which ribs on the teeth fitted; this contrasts with Old World hippuritids that have true sockets formed from upfolds of the tabulae for the teeth. The distinctive morphology of the tooth sockets is here used to define a monophyletic subfamily for which the name Barrettiinae CHUBB is available.

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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