Does stress mess with rodents’ heads? Influence of habitat amount and genetic factors in mandible fluctuating asymmetry in South American water rats ( Nectomys squamipes , Sigmodontinae) from Brazilian Atlantic rainforest remnants

Abstract—The family Bromeliaceae is essentially Neotropical, with high endemism and diversity in the Atlantic Rainforest Domain. Species circumscription is a major problem in the family systematics, especially in the most diverse genera. Species of the Vriesea procera complex, which occur in forests and restinga (coastal vegetation) along the South American Atlantic coast from Venezuela to southern Brazil, share the same basic vegetative and reproductive morphological patterns. However, they vary widely in the number and position of inflorescence branches as well as in the dimensions, position, and shape of the leaves and flowers in different populations. Here we aimed 1) to evaluate the morphological variation in the V. procera complex, through morphometric analyses of natural populations along the Brazilian Atlantic Rainforest; and 2) to determine the taxonomic relationships among these species, establishing the validity and the limits of variation of the taxa through taxonomic treatment. Fourteen natural populations, 271 individuals, and 36 morphometric variables were analyzed. Kruskal-Wallis tests and discriminant analyses were conducted to test statistical differences between previously established groups. Of an original three species and three varieties, our data allowed us to recognize six species, including three new taxa (Vriesea aureoramosa, V. magna, V. rubroviridis) and one new name and status (V. flexuosa). The resulting taxa are distinguished by the inflorescence and leaf sizes and especially by floral characteristics such as the length of bracts, sepals, petals, stamens, and pistils, besides the petal apex posture and relative position of the stamen during anthesis. Recognition of cryptic species under the names V. procera and V. neoglutinosa is an important step toward a better understanding of the biodiversity of the Brazilian Atlantic Rainforest.

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Three new species of Lauraceae from the Atlantic rainforest of Brazil

Phytotaxa ◽

10.11646/phytotaxa.316.2.4 ◽

2017 ◽

Vol 316 (2) ◽

pp. 149 ◽

Cited By ~ 2

Author(s):

PEDRO LUÍS RODRIGUES DE MORAES ◽

MATHEUS CARVALHO VERGNE ◽

HENK VAN DER WERFF

Keyword(s):

New Species ◽

Atlantic Rainforest ◽

South American ◽

Three New Species

Three South-American new species belonging to Cinnamomum, Mezilaurus, and Williamodendron, are described and illustrated from specimens collected in the Atlantic rainforest of Brazil. The new species are Cinnamomum baitelloanum, Mezilaurus sessiliflora, and Williamodendron itamarajuensis. Their putative relationships within the respective genus are discussed.

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First records of Scotaena Klug, 1810 species (Hymenoptera, Tiphiidae, Thynninae) in the Brazilian Atlantic Rainforest

Check List ◽

10.15560/13.4.255 ◽

2017 ◽

Vol 13 (4) ◽

pp. 255-260

Author(s):

Fernando Carnimeo ◽

Cíntia Eleonora Lopes Justino ◽

Fernando Barbosa Noll

Keyword(s):

Atlantic Rainforest ◽

Brazilian Atlantic Rainforest

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Does ecophysiological behaviour explain habitat occupation of sympatric Clusia species in a Brazilian Atlantic rainforest?

Trees ◽

10.1007/s00468-015-1277-1 ◽

2015 ◽

Vol 29 (6) ◽

pp. 1973-1988 ◽

Cited By ~ 7

Author(s):

Ulrich Lüttge ◽

Fabio R. Scarano ◽

Eduardo A. de Mattos ◽

Augusto C. Franco ◽

Fernando Broetto ◽

...

Keyword(s):

Atlantic Rainforest ◽

Brazilian Atlantic Rainforest

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Tropical Mountaintop Insects Imperiled by Climate Change: The Case of the South American Atlantic Rainforest

10.1016/b978-0-12-821139-7.00169-0 ◽

2021 ◽

Author(s):

Carolina Colares ◽

Ana Letícia Carracena ◽

Beatriz Monteiro Lima ◽

Carlos Vinícius S. Gomes ◽

Gabriel Khattar ◽

...

Keyword(s):

Climate Change ◽

Atlantic Rainforest ◽

South American ◽

The South

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Conservation Status of Brachycephalus Toadlets (Anura: Brachycephalidae) from the Brazilian Atlantic Rainforest

Diversity ◽

10.3390/d11090150 ◽

2019 ◽

Vol 11 (9) ◽

pp. 150

Author(s):

Marcos R. Bornschein ◽

Marcio R. Pie ◽

Larissa Teixeira

Keyword(s):

Conservation Status ◽

Iucn Red List ◽

Critically Endangered ◽

Atlantic Rainforest ◽

Minimum Convex Polygon ◽

Iucn Red List Categories ◽

Data Deficient ◽

Polygon Method ◽

Official Recognition ◽

Brazilian Atlantic Rainforest

The number of described anurans has increased continuously, with many newly described species determined to be at risk. Most of these new species inhabit hotspots and are under threat of habitat loss, such as Brachycephalus, a genus of small toadlets that inhabits the litter of the Brazilian Atlantic Rainforest. Of 36 known species, 22 were described in the last decade, but only 11 have been assessed according to the IUCN Red List categories, with just one currently listed as Critically Endangered. All available data on occurrence, distribution, density, and threats to Brachycephalus were reviewed. The species extent of occurrence was estimated using the Minimum Convex Polygon method for species with three or more records and by delimiting continuous areas within the altitudinal range of species with up to two records. These data were integrated to assess the conservation status according to the IUCN criteria. Six species have been evaluated as Critically Endangered, five as Endangered, 10 as Vulnerable, five as Least Concern, and 10 as Data Deficient. Deforestation was the most common threat to imperiled Brachycephalus species. The official recognition of these categories might be more readily adopted if the microendemic nature of their geographical distribution is taken into account.

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Typhlomyrmex meire, a remarkable new species endemic to Southern Bahia, Brazil (Formicidae: Ectatomminae)

Zootaxa ◽

10.11646/zootaxa678.1.1 ◽

2004 ◽

Vol 678 (1) ◽

pp. 1 ◽

Cited By ~ 5

Author(s):

SEBASTIEN LACAU ◽

CLAIRE VILLEMANT ◽

JACQUES H.C. DELABIE

Keyword(s):

New Species ◽

Endemic Species ◽

Identification Key ◽

Atlantic Rainforest ◽

Southern Bahia ◽

Brazilian Atlantic Rainforest

The worker, queen and male of the ant Typhlomyrmex meire Lacau, Villemant & Delabie new spe- cies (Ectatomminae: Typhlomyrmecini) are described from the Brazilian Atlantic rainforest. This endemic species from southern Bahia is easily distinguished from all other members of the genus by the peculiar morphology of mandibles and the reduction of the antennal segments observed in both sexes. We provide a partial redefinition of the genus diagnosis taking into account the antennal structure of the new species. A new identification key for workers is provided.

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Paleoclimate Changes during the last 100,000 yr from a Record in the Brazilian Atlantic Rainforest region and Interhemispheric Comparison

Quaternary Research ◽

10.1016/j.yqres.2005.08.006 ◽

2005 ◽

Vol 64 (3) ◽

pp. 444-450 ◽

Cited By ~ 90

Author(s):

M.-P. Ledru ◽

D.-D. Rousseau ◽

F.W. Cruz ◽

C. Riccomini ◽

I. Karmann ◽

...

Keyword(s):

Global Climate ◽

Ice Core ◽

Climatic Changes ◽

Climate Forcing ◽

Atlantic Rainforest ◽

Tropical Atlantic ◽

Forest Expansion ◽

Last Glaciation ◽

Arboreal Pollen ◽

Brazilian Atlantic Rainforest

AbstractA long terrestrial record, Colônia CO-3, from the Atlantic rainforest region in Brazil (23°52′S, 46°42′20 ʺW, 900 m a.s.l.) registrates variations in the forest expansion during the last 100,000 yr. The 780-cm depth core was analyzed at 2-cm intervals and arboreal pollen frequencies were compared to nearby speleothem stable isotope records and neighboring marine records from the tropical Atlantic. To evaluate regional versus global climate forcing, our record was compared with Greenland and Antarctic ice-core records. These comparisons suggest that changes in temperature seen in polar latitudes relate to moisture changes: e.g., to changes in the length of the dry season, in tropical and subtropical latitudes during glacial as well as interglacial times. These climatic changes result from changes in the frequency of polar air incursions to these latitudes inducing a permanent cloud cover and precipitation. This is an important result that should help define paleoclimatic features in the Southern Hemisphere for the last glaciation.

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Three new species of Aulonemia (Poaceae: Bambusoideae) from the Brazilian Atlantic rainforest

Phytotaxa ◽

10.11646/phytotaxa.156.4.6 ◽

2014 ◽

Vol 156 (4) ◽

pp. 235 ◽

Cited By ~ 3

Author(s):

Pedro Lage Viana ◽

Tarciso S. Filgueiras

Keyword(s):

New Species ◽

Conservation Status ◽

Unusual Feature ◽

Atlantic Rainforest ◽

Habitat Distribution ◽

Brazilian Species ◽

In The Wild ◽

Three New Species ◽

Brazilian Atlantic Rainforest

Three new Brazilian species of Aulonemia, a Neotropical woody bamboo genus, are described and illustrated: Aulonemia cincta, with its distinctive corky girdles; Aulonemia prolifera, characterized, among other Brazilian congeners, by its fimbriate leaf sheaths; and Aulonemia soderstromii, with its conspicuous cluster of spreading fimbriae. These new species all propagate by amphipodial rhizomes, an unusual feature shared with the Brazilian species A. aristulata, with which they are morphologically compared. Comments about habitat, distribution, phenology, and conservation status for each species are provided, as well as photographs taken in the wild.

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