BIODIVERSIDAD
2011, el Año de los bosques[68]
Pérdida de biodiversidad y aumento de enfermedades[69]
Biodiversidad y Bienestar Humano en América Latina y el Caribe [70]
Los Andes explican la riqueza de vida en la Amazonia[71]
Biodiversity: facts and figures[72]
Wanted: an IPCC for biodiversity[73]
Hundreds of New Species Found in Papua New Guinea[74]
Deforestation Rate Continues to Plunge in Brazil[75]
Soja, ciencia, justicia y política[76]
Especies africanas de agua dulce amenazadas: medios de subsistencia en peligro[77]
Inventarios Globales de Biodiversidad: Una Respuesta a la Crisis Taxonómica por Lawrence M. Page[78]
Amenaza a la Biodiversidad y Que Se Puede Hacer,por Daniel Simberloff[79]
Simbiosis,mutualismo y la diversidad de frutos silvestres[80]
Mejillones invasores en la Cuenca del Plata, Argentina[81]
Especiación y Biodiversidad por Edward O. Wilson[82]
Recuento de peces y organismos marinos[83]
Abejas en cafetales de sombra mejoran biodiversidad[84]
La Búsqueda de Medicinas por Mark J. Plotkin [85]
La Caatinga perdio el 45 % de su masa vegetal[86]
Inventario de biodiversidad marina: ultimo informe[87]
Las aguas de Australia, Japón y China son las más ricas en especies marinas[88]
El Mediterraneo, uno de los mares mas amenazados[89]
AMPHIBIANS WIPED OUT BEFORE THEY ARE DISCOVERED[90]
Incendio en el Pantanal[91]
12 tendencias ambientales en America del Sur[92]
Una cuna de biodiversidad en las Tablas de Daimiel[93]
ATLAS OF BIODIVERSITY RISK[94]
ESPECIALES: corredores, conectividad, cambio climatico y participacion social en conservacion[95]
How many species are there?[96]
Politics is a key factor in biodiversity[97]
El Gran Chaco y la Deforestacion[98]; Entrevista a Jorge Morello[99]
IPBES,Plataforma Intergubernamental sobre Biodiversidad y Servicios de Ecosistemas[100]
Vida y milagros de la biodiversidad[101]
UE y la biodiversidad[102]
El 40% de la economía mundial depende de la naturaleza[103]
Triatlón por la vida del Daríen[104]
Miles de personas se conectan con la naturaleza a través de la campaña de la UE[105]
La minería en Colombia: El gran dilema[106]
Donde mueren las especies[107]
Lagartos sucumben al calentamiento global[108]
La pérdida de especies y el Hombre[109]
El 4% de la deforestación mundial ocurre en Mexico[110]
Climate Change Causing Lizards to 'Wink Out of Existence[111]
Nations Ignoring Biodiversity Treaty, U.N. Says[112]
La ONU y la pérdida de biodiversidad[113]
It's a microbial world[114]
Biodiversidad, definiciones y conceptos[115]
Barómetro para la biodiversidad[116]
La perdida de biodiversidad según E.O. Wilson[117]
Faltan estudios para la eficaz protección de la biodiversidad[118]
Efecto bumerán en Monsanto, en los Estados Unidos[119]
La pérdida de biodiversidad es el mayor desafío[120]
Los Wichi[121]
Biocombustibles y seguridad alimentaria-1-.doc
La destrucción del Chaco
Un tercio de los europeos desconoce la biodiversidad
Cursos avanzados
[[122]]
Journal of Biogeography Editor´s choice[123]
Frontiers of Biogeography[124]
Biogeografia Bulletin of the Systematic & Evolutionary Biogeographical Association[125]
...NOTICIAS
Conejos Pigmeos en Peligro en los Estados Unidos[126]
Nómades tibetanos, desertificacion y cambio climático[127]
Mammoth-Killer Impact Rejected[128]
Consecuencias de la minería de montaña
Drought-Induced Reduction in Global Terrestrial Net Primary Production from 2000 Through 2009[129]
Ancient Crocodile Chewed Like a Mammal[130]
Burrowing Moles Breathe Easy[131]
Tiny Amphibian, Long Life[132]
Marmots Thrive on Climate Change[133]
The Science Show and the Creation - the story of Charles Darwin writing his major work[134]
Report maps perils of warming
… For example, the report shows that each 1 °C of warming will reduce rain in the southwest of North America, the Mediterranean and southern Africa by 5–10%; cut yields of some crops, including maize (corn) and wheat, by 5–15%; and increase the area burned by wildfires in the western United States by 200–400%[135]
Millennium assessment of human behavior[136]
The white-nose syndrome[137]
Los neandertales viven en nuestros genes[138]
DNA Sequence of Neandertal genome[139]
Somos más neandertales de lo que pensábamos[140]
La mitad de los primates en riesgo de extinción [141]
El estudio del monito del monte aporta luz sobre la evolución de los mamíferos[142]
REVISTAS DE MAMIFEROS/MAMMAL JOURNALS
MASTOZOOLOGIA NEOTROPICAL</p>
[143]
Ultimo numero vol 17[144]
MAMMALIAN BIOLOGY- Zeitschrift für Säugetierkunde</p>[145]
JOURNAL OF MAMMALOGY</p>[146]
GALEMYS</p>[147]
MAMMAL REVIEW</p>[148]
AUSTRALIAN MAMMALOGY</p>[149]
MAMMALIA</p> [150]
ACTA THERIOLOGICA</p> [151]
JOURNAL OF MAMMALIAN EVOLUTION[152]
ACTA THERIOLOGICA SINICA[Acta Theriologica Sinica]
MARINE MAMMAL SCIENCE[153]
AQUATIC MAMMALS[154]
MAMMAL STUDY (JAPAN)
ZOOTAXA[155]
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LIBROS
Mamíferos de Argentina Sistemática y Distribución (SAREM, 2006)
Editores: Rubén M. Barquez, M. Mónica Díaz, Ricardo A. Ojeda
Interesados contactar a Analia Autino: pidba@arnet.com.ar
Homenajes a CHARLES R. DARWIN
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En el bicentario de su nacimiento (12 Febrero de 1809) y centésimo quincuagésimo aniversario de “El Origen de las Especies” (24 noviembre 1859)
Bicentennial Darwin Day Events
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Noticias DEL GiB
Paola Sassi se encuentra realizando una estadía de corta duración en el Departamento de Genética, CESAR –HOFFMANN LAB (BIO 21 INSTITUTE) de la Universidad de Melbourne bajo la Dirección de Ary A. Hoffmann.
POSTERS
Invasiones biológicas.La introducción y expansión de organismos en regiones fuera de su rango de distribución natural, junto a la degradación y fragmentación de hábitats, cambio climático y tráfico de vida silvestre, son las causas mas importantes de pérdida de la biodiversidad. En Argentina se encuentran aproximadamente 17 especies de mamíferos exóticos invasores distribuidos desde los Andes a la costa Atlántica. El poster de Invasiones sintetiza las características de las distintas especies, su distribución, fecha de entrada, y dieta, entre otros.
Biodiversidad del ecosistema Andino.El ecosistema montañoso de los Andes ha jugado un papel importante en la evolución y diversificación de la biota Sudamericana. Sin embargo, es muy poco lo que aún conocemos sobre la riqueza y abundancia de sus especies animales y vegetales. El Grupo de Investigaciones de la Biodiversidad (GiB-IADIZA)preparó este póster que acerca al público en general la riqueza de los mamíferos de las tierras Andinas. Material para difusión institucional, educación, actividades docentes y divulgación al público.
Los interesados pueden solicitarlos en el GiB(IADIZA, CCT (ex CRICYT),Pque San Martín,Mendoza).
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CONGRESOS
2011
V Congreso de Mastozoologia en Bolivia, 18-20 de Mayo de 2011, La Paz, Bolivia
BIOLIEF 2011 - 2nd World Conference on Biological Invasions and Ecosystem Functioning[156]
VI European Congress of Mammalogy, Muséum National d’Histoire Naturelle,Jardin des Plantes, Paris, France
19-23 July 2011
Niche partitioning and coexistence between two mammalian herbivores in the Dry Chaco of Argentina
Competitive interactions are known to be stronger between morphologically similar and phylogenetically
closely related sympatric species. Patagonian mara (Dolichotis patagonum) and Chacoan cavy
(Pediolagus salinicola) are two medium-sized herbivorous mammals which have disjunctive distributions
within a sympatric region characterized by dry woodlands and shrublands (Dry Chaco, Argentina). The
niche partition hypothesis predicts that ecologically similar species living together should show differentiation
in at least one of the main niche dimensions to avoid competition. Thus, we predict that
Patagonian mara and Chacoan cavies will differentiate in the use of trophic and/or spatial niche. To prove
this hypothesis, we sampled 26 study sites in the dry and wet season and collected fresh faeces of both
species. We estimated the diet composition using microhistological analysis of faeces. For habitat
analysis we measured 16 vegetation variables, as well as habitat complexity and heterogeneity structure.
Our results showed that during the dry season, both species segregate their diet but not their habitat
niche, whereas during the wet season they segregate their habitat, and diet segregation is diffused. Diet
overlap was similar between seasons, indicating a change in the foraging strategy of the cavy, which
selected forbs, grasses, succulents and trees in the dry season and only grasses in the wet season. Our
results support the niche partition hypothesis as a mechanism of coexistence among ecologically similar
species in the South American temperate arid lands.Verónica Chillo, Daniela Rodríguez and Ricardo A. Ojeda. Acta Oecologica in press.
[157]
Food habits and impact of rooting behaviour of the invasive wild boar, Sus scrofa, in a protected area of the Monte Desert, Argentina
[158]
The wild boar, Sus scrofa, was introduced in the central region of Argentina in the early 20th century. A small feral population invaded the western area of the Man and Biosphere Reserve of Ñacuñán, Argentina in the early 1980’sMaB_Ñacuñan.pdf. The purpose of our study was to provide information about the diet of wild boars in the semiarid region of Argentina and assess their potential effect on vegetation through soil rooting. We analyzed 41 faecal samples and compared cover plant composition between rooted and non rooted soil. Our results showed that 95% of the diet consisted of different parts (leaves, stems, glumes, fruits, seeds, and bulbs) of 36 plant species, while arthropods and animal tissue represented only 5% of the diet. Two plant species (Sphaeralcea miniata and Pitraea cuneato-ovata) composed the bulk of the diet, representing almost 50% of the total items found in the faeces. Plant cover was significantly different between rooted and non rooted areas. Rooted areas were dominated by Pitraea cuneato-ovata, whereas the cover of Lycium sp was higher in non rooted areas. This is the first study addressing the ecology of the wild boar in a protected area of the Monte Desert biome of Argentina. María Fernanda Cuevas, Agustina Novillo, Claudia Campos, Maria Ana Dacar and Ricardo A. Ojeda, JAE in press; partly financed by ALARM (EU)- CONICET [159]and SECYT (Argentina)[160]
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Phylogeography and genetic variation in the South American rodent Tympanoctomys barrerae (Rodentia: Octodontidae)
The red viscacha rat, Tympanoctomys barrerae, is an octodontid rodent endemic to the arid west-central and
southern regions of Argentina[[161]]. It is solitary, lives in complex burrows built in soft soil, and occurs at low
population densities in patches associated with salt basins and sand dunes in lowland habitats of the Monte[162] and
Patagonia deserts. The purpose of this study was to investigate the genetic structure and biogeography of this
desert specialist. To assess genetic variation an 800-base pair fragment of the mitochondrial control region was
sequenced for 60 individuals from 8 localities across the species’ range. Relationships among haplotypes were
inferred from phylogenetic analyses (maximum parsimony, Bayesian, and networks). Genetic structure and
demographic history were analyzed with descriptive statistics, mismatch distributions, neutrality tests (Tajima’s
and Fu’s), and analyses of molecular variance (AMOVAs). In total, 26 haplotypes were found, most restricted
to single populations. The presence of unshared haplotypes was consistent with low migration rates. Within the
distribution (between 29uS and 39uS) southern and northern populations showed higher genetic diversity values
than central populations. Populations of T. barrerae showed moderate to high genetic differentiation on the
basis of haplotypes of central populations. AMOVA analyses indicated a moderate level of geographic structure
for all populations. Low haplotype and nucleotide diversities in central populations suggest a possible
bottleneck associated with Pleistocene glaciations or volcanic activity in this part of the range of the viscacha
rat. Phylogeographic structure was moderate, and the analyses recovered 2 principal clades: A (with central and
a part of the southern distribution) and B (with northern and another part of the southern distribution). Most
populations were polyphyletic, indicating that they have not been isolated long enough to reach reciprocal
monophyly. Demographic analyses conducted for clades A and B suggest a recent history of population
expansion. (Agustina Ojeda[[163]], Journal of Mammalogy, 91(2):302–313, 2010)
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