scholarly journals AVES DE LA PARTE BAJA DEL RÍO SINÚ, CARIBE COLOMBIANO; INVENTARIO Y AMPLIACIONES DE DISTRIBUCIÓN

2016 ◽  
Vol 34 ◽  
Author(s):  
Felipe A. Estela ◽  
Mateo López Victoria
Keyword(s):  
Geographical Distribution ◽  
Coastal Wetlands ◽  
New Records ◽  
Bird Species ◽  
Previous Knowledge ◽  
Migratory Species ◽  
Bird Populations ◽  
Bird Richness ◽  
The Caribbean ◽  
Del Rio

Knowledge of the geographical distribution of the birds in the Colombian Caribbean is still meager. Coastal wetlands are among the less studied environments in the area and one of the most important for their high bird richness. Since 1998, inventories and monitoring of the bird populations of the lower part of the Sinú river have been made. Until July 2005, 296 bird species have been recorded for the area, 41 of which are new for this part of the Caribbean; in addition, new wintering localities were noted for eight migratory species. Breeding records were obtained for 98 species. Three species are threatened at some level and six have a restricted geographic distribution. New records for the area are explained in terms of the limited previous knowledge of the region’s avifauna.

scholarly journals THE RELATIVE IMPORTANCE OF THREE SPECIFIC CLIMATIC FACTORS ON NORTH AMERICAN BREEDING BIRD SPECIES RICHNESS

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 1455-1459
Author(s):  
M. Zhang ◽  
Y. Lin
Keyword(s):  
North American ◽  
Climatic Factors ◽  
Potential Evapotranspiration ◽  
Linear Regression Analysis ◽  
Bird Species ◽  
Migratory Species ◽  
Breeding Bird ◽  
Bird Species Richness ◽  
The North ◽  
Bird Richness

Understanding of the relationships between bird species and environment facilitates protecting avian biodiversity and maintaining nature sustaining. However, the effects of many climatic factors on bird richness have not been fully grasped. To fill this gap, this study investigated the relationships between the richness of three typical North American breeding bird species and three climatic factors at the monthly scale. Based on the North American Breeding Bird Survey (BBS) data during 1967–2014, the relationships between the numbers of Carolina wren, Cerulean warbler, and Red-bellied woodpecker and the three climatic factors of precipitation, vapor pressure, and potential evapotranspiration were examined using the method of Pearson linear regression analysis. The results indicated that the three climatic factors have correlations with the richness of the breeding bird species but in different modes, e.g., strong correlations for the non-migratory species but weak correlations for the migratory species.

scholarly journals New records of Diploglossus monotropis (Kuhl, 1820) (Squamata: Anguidae) from Urabá and Magdalena River valley, Colombia, with an updated geographic distribution map

Check List ◽  
2015 ◽  
Vol 11 (4) ◽  
pp. 1703
Author(s):  
Román Felipe Díaz-Ayala ◽  
Paul David Gutiérrez Cárdenas ◽  
Angelly Mariela Vásquez-Correa ◽  
Jóse Rances Caicedo-Portilla
Keyword(s):  
Geographical Distribution ◽  
Geographic Distribution ◽  
New Records ◽  
Published Data ◽  
Distribution Map ◽  
Wide Geographical Distribution ◽  
The Pacific ◽  
The Caribbean ◽  
Magdalena River ◽  
Scientific Collections

Based on recent records, published data, and review of specimens deposited in scientific collections, we present an updated map of the geographic distribution of Diploglossus monotropis in Colombia. Our data show that this species has a wide geographical distribution, including the Pacific versant of the Cordillera Occidental, the inter-Andean valley of the Magdalena River, and the Caribbean lowlands of northern Colombia.

scholarly journals New records, range extensions and updated distribution of two gymnophthalmid lizards from the Caribbean Region, Colombia

Check List ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 1735
Author(s):  
Fabio Leonardo Meza-Joya ◽  
Eliana Ramos-Pallares
Keyword(s):  
Geographical Distribution ◽  
Geographic Distribution ◽  
New Records ◽  
Wide Distribution ◽  
Caribbean Region ◽  
Detailed Knowledge ◽  
Distribution Map ◽  
The Caribbean

In Colombia, detailed knowledge of the geographic distribution of gymnophthalmid lizards is scarce. This paper presents the first confirmed records of Leposoma rugiceps and provides additional records of Gymnophthalmus speciosus from Department of La Guajira, in the Colombian Caribbean Region. These records extend the geographical distribution of both species and support their wide distribution in the lowlands of north of Colombia. Furthermore, we provide an updated distribution map with known occurrences of these species in Colombia.

scholarly journals A new genus of Achrysonini and new records in Cerambycidae (Coleoptera, Chrysomeloidea) from Colombia

2021 ◽  
Vol 735 ◽  
Author(s):  
Kimberly García ◽  
Juan Pablo Botero ◽  
Antonio Santos-Silva
Keyword(s):  
Geographical Distribution ◽  
New Genus ◽  
New Records ◽  
Caribbean Region ◽  
South American ◽  
The Caribbean

Ysachron pilosus gen. et sp. nov. is described from the Caribbean region of Colombia, and an updated key to genera of South American Achrysonini is provided. Moreover, the geographical distribution of 45 species of Cerambycidae, belonging to the subfamilies Cerambycinae, Lamiinae and Prioninae, is expanded, including nine new country records for Colombia and a further locality in Colombia for nine species.

scholarly journals Losses and gains of fallows drive farmland bird populations over three funding periods of the EU Common Agricultural Policy

2021 ◽  
Author(s):  
Lionel Hertzog ◽  
Norbert Roeder ◽  
Claudia Frank ◽  
Hannah Boehner ◽  
Johannes Kamp ◽  
...  
Keyword(s):  
Species Richness ◽  
Habitat Preferences ◽  
Bird Species ◽  
Fallow Land ◽  
Farmland Birds ◽  
Land Area ◽  
Landscape Complexity ◽  
Bird Populations ◽  
Bird Richness ◽  
Farmland Bird

Fallow land provides habitat for threatened and declining farmland biodiversity. Policy change under the EU's Common Agricultural Policy (CAP) has been driving the area of fallows over the past decades and influenced trends in farmland biodiversity. We analyzed the impact of changes in fallow area across Germany on species richness and abundance of farmland birds over three CAP funding periods. We examined whether responses to fallow land area were modulated by species habitat preferences and landscape complexity. We combined spatial data on fallow land area from three agricultural censuses in Germany (2007, 2010 and 2016) with country-wide, annual monitoring data on farmland birds. Farmland bird species richness and the abundance of edge- and field-breeders responded positively to increases in fallows. The effect of fallows on bird richness was strongest at intermediate levels of landscape complexity. There was support for an increasing effect strength of fallow land area on field-breeders' abundance with increasing landscape complexity. We conclude that the loss of fallows in the period 2007 to 2016 resulted in strong declines of farmland birds. We predict that a future increase of the proportion of fallow land to 4%, as envisaged in the post-2020 CAP for Germany, will result in an average increase of 7% in farmland bird species richness and of 11% in average farmland bird abundance compared to 2016, but will depend on species-specific habitat preferences. Increasing the proportion of fallow land will be a key lever to stabilize and revert negative farmland bird population trends. An increase of fallow area in all but the least complex landscapes will boost farmland bird richness and abundance of field breeders. Increasing the proportion of fallow land to 4% is projected to, on average, bring farmland bird richness and abundance back to the levels observed in 2007 acknowledging that farmland bird populations were already severely depleted in 2007. A more ambitious expansion of fallow land towards 10%, such as in the context of the EU Biodiversity Strategy for 2030, should be targeted towards areas that experienced the strongest loss of fallows and towards landscapes with intermediate structural complexity.

scholarly journals Monitoring Breeding Bird Populations in Grand Teton National Park

1994 ◽  
Vol 18 ◽  
pp. 42-45
Author(s):  
Martin Cody
Keyword(s):  
National Park ◽  
Monitoring Program ◽  
Bird Species ◽  
Migratory Species ◽  
Breeding Bird ◽  
Grand Teton National Park ◽  
Subalpine Fir ◽  
Bird Populations ◽  
Jackson Hole ◽  
Management And Conservation

The central aim of this project is to instigate a permanent program of monitoring landbird species composition and densities in a variety of representative habitats within Grand Teton National Park (GTNP). Habitats range from grassland and sagebrush on the valley floor of Jackson Hole (around 1900 m) through a range of scrub, woodland, and tall foothill forest vegetation types to montane sites of subalpine fir and tundra (ca. 3000 m). The monitoring program will provide data on year-to-year fluctuations in breeding bird species and densities, and eventually on any longer-term changes in the local avifauna, of both resident and migratory species; the data base will further understanding of population variability, local shifts in distribution and abundance, and potentially form a source for management and conservation decisions.

scholarly journals ACTUALIZACIÓN DE LA DISTRIBUCIÓN Y NOTAS SOBRE EL PEREZOSO DE TRES GARRAS Bradypus variegatus castaneiceps (Pilosa: Bradipodidae) EN HONDURAS

2015 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Leonel Marineros ◽  
Hector Orlando Portillo Reyes
Keyword(s):  
Spatial Distribution ◽  
Central America ◽  
New Records ◽  
Probable Occurrence ◽  
The Common ◽  
Special Concern ◽  
The Caribbean ◽  
Bradypus Variegatus ◽  
Del Rio ◽  
The Relationship

RESUMENSe presentan 15 nuevas localidades de encuentros con perezosos de tres dedos Bradypus variegatus castaneiceps (Pilosa: Bradypodidae) en Honduras. Se confirma la existencia de esta especie en los departamentos de El Paraíso y Atlántida; con ello, se amplía la distribución por la cuenca del Río Segovia (frontera con Nicaragua) y por la costa Caribe de Honduras. Adicionalmente esta investigación propone una distribución espacial potencial de esta especie en el país basada en afinidad de caracteres fisiográficos con el programa MaxEnt. El estudio incluye también el registro de una cría en el mes de abril del 2013, se discuten los nombres locales de este animal en Honduras. Se evalúa las acciones de conservación en el país.Palabras clave: Ampliación, área de distribución, Centroamérica, three-toed sloth, probable ocurrencia, nuevos registros, MaxEnt.ABSTRACTWe present 15 new records for the brown three-toed sloth, Bradypus variegatus castaneiceps (Pilosa: Bradypodidae) in Honduras. These records confirm the existence of this specie in the departments of El Paraiso and Atlántida, and expand its geographical distribution from the watershed of the Rio Segovia (border with Nicaraguan) to along the Caribbean coast of Honduras. Additionally, we propose a potential spatial distribution of the specie based on the relationship between records and physiographic characteristics using the program MaxEnt. We document the presence of a juvenile in April 2013 and include a discussion of the common names of three-toed sloths in Honduras. We furthermore evaluate the position of this species on the List of Species of Special Concern and the qualification of its status as least concern (LC) in the IUCN Red ListKey words: Range extension, Central America, brown-throated sloth, probable occurrence, new records, MaxEnt

scholarly journals Weak Effects of Owned Outdoor Cat Density on Urban Bird Richness and Abundance

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 507
Author(s):  
Genevieve C. Perkins ◽  
Amanda E. Martin ◽  
Adam C. Smith ◽  
Lenore Fahrig
Keyword(s):  
Urban Areas ◽  
Bird Species ◽  
Lethal Effect ◽  
Bird Communities ◽  
Domestic Cats ◽  
Urban Birds ◽  
Negative Effects ◽  
Bird Populations ◽  
Bird Richness ◽  
Urban Bird

Domestic cats (Felis catus) are ubiquitous predators of birds in urban areas. In addition to the lethal effect of predation, there can also be sublethal, negative effects of domestic cats on individual birds. These effects have led to the inference that reducing outdoor cat densities would benefit urban bird communities. Here we estimate the likely result of policies/programs designed to reduce densities of owned outdoor cats in urban areas, estimating relationships between bird richness/abundance and cat densities across 58 landscapes in Ottawa, Ontario, Canada. We estimate that we would most likely observe one additional bird species, and 0.003 additional individuals per species, if policies/programs reduced owned outdoor cat densities to zero in an average landscape in Ottawa (with 130.2 cats/km2). However, these effects of cat density on birds were uncertain, with 95% confidence intervals crossing zero. Our findings—in combination with those of previous studies—suggest a need for research to resolve the apparent disconnect between the strong, negative effects of cats on individual urban birds and the weak, uncertain effects of cats on bird populations. Although measures that reduce owned outdoor cat densities are justified based on the precautionary principle, evidence to date does not support prioritizing these measures over those addressing threats that have consistently strong effects on bird populations.

Nuevas citas y aportaciones corológicas para la flora bentónica marina del Atlántico de la Península Ibérica. New records and geographical distribution additions of the benthic marine flora of the Atlantic Iberian Peninsula

2012 ◽  
Vol 37 ◽  
pp. 5-32 ◽  
Author(s):  
Ignacio Bárbara ◽  
Pilar Díaz Tapia ◽  
César Peteiro ◽  
Estibaliz Berecibar ◽  
Viviana Peña ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Geographical Distribution ◽  
New Records ◽  
Distribution Data ◽  
New Findings ◽  
Floristic Studies ◽  
Marine Flora ◽  
Derbesia Marina ◽  
Halicystis Ovalis ◽  
Península Ibérica

Español.  Se dan a conocer nuevas localizaciones y datos corológicos para 98 especies (61 Rhodophyta, 22 Ochrophyta, 15 Chlorophyta) de algas bentónicas marinas recolectadas en el intermareal y submareal de más de 80 localidades de las costas atlánticas y cantábricas de la Península Ibérica. Polysiphonia devoniensis, P. fibrata y Zonaria tournefortii son novedad para Portugal y 5 especies (Bonnemaisonia hamifera, Calosiphonia vermicularis, P. devoniensis, Hincksia intermedia y Derbesia marina stadium Halicystis ovalis) son nuevas citas para Galicia. Paralelamente, se aportan 101 primeras citas provinciales (2 Guipúzcoa, 1 Vizcaya, 8 Cantabria, 5 Asturias, 7 Lugo, 1 A Coruña, 8 Pontevedra, 1 Beira litoral, 15 Estremadura, 20 Alentejo, 25 Algarve y 8 Cádiz) y, además, se dan a conocer 108 segundas citas provinciales. Aunque la flora bentónica marina del Atlántico Peninsular ha sido objeto de numerosos estudios, estos nuevos hallazgos corológicos ponen en evidencia que todavía son necesarios más estudios florísticos en estas costas.English.  In this work, we provide new records and geographical distribution data for 98 seaweeds (61 Rhodophyta, 22 Ochrophyta, 15 Chlorophyta) inhabiting more than 80 sites (intertidal and subtidal) of the Atlantic Iberian Peninsula. Polysiphonia devoniensis, P. fibrata y Zonaria tournefortii are new records for Portugal and 5 species (Bonnemaisonia hamifera, Calosiphonia vermicularis, P. devoniensis, Hincksia intermedia and Derbesia marina stadium Halicystis ovalis) are new records for Galicia. Moreover, 101 new records are reported for the first time in the studied provinces (2 Guipúzcoa, 1 Vizcaya, 8 Cantabria, 5 Asturias, 7 Lugo, 1 A Coruña, 8 Pontevedra, 1 Beira litoral, 15 Estremadura, 20 Alentejo, 25 Algarve y 8 Cádiz) and 108 for the second time. Although the Atlantic marine algae of the Iberian Peninsula are well studied, these new findings show that further floristic studies are necessary to complete our knowledge of the natural heritage of this region.

scholarly journals Elevational niche-shift migration: Why the degree of elevational change matters for the ecology, evolution, and physiology of migratory birds

The Auk ◽  
2021 ◽  
Author(s):  
Jessie L Williamson ◽  
Christopher C Witt
Keyword(s):  
Partial Pressure ◽  
Bird Species ◽  
Seasonal Migration ◽  
Critical Examination ◽  
Niche Shift ◽  
Migratory Connectivity ◽  
Migratory Species ◽  
Arterial Blood ◽  
Air Density ◽  
Elevational Migration

Abstract Elevational migration can be defined as roundtrip seasonal movement that involves upward and downward shifts in elevation. These shifts incur physiological challenges that are proportional to the degree of elevational change. Larger shifts in elevation correspond to larger shifts in partial pressure of oxygen, air density, temperature, and ultraviolet (UV) exposure. Although most avian examples of elevational migration involve subtle shifts that would have minimal impacts on physiology, shifts of any magnitude have previously been considered under the broad umbrella of “elevational migration”. Here, we consider extreme seasonal elevational movements (≥2,000 m), sufficient to shift the elevational dimension of the eco-climatic niche. Migratory bird populations typically maintain inter-seasonal stability in the temperature, precipitation, and elevational aspects of their climatic niches, a tendency that likely reflects genetic physiological specialization on environmental conditions such as atmospheric pressure. A shift of ≥2,000 m involves a ≥20% change in air density and oxygen partial pressure, sufficient to incur functionally impactful declines in arterial blood-oxygen saturation and require compensatory shifts in respiratory physiology. We refer to this phenomenon as elevational niche-shift migration (ENSM). In this review, we analyzed >4 million occurrence records to identify 105 populations, representing 92 bird species, that undergo complete or partial ENSM. We identified key ecological and evolutionary questions regarding the causes and consequences of ENSM. Our synthesis reveals that ENSM has evolved independently in at least 29 avian families spanning 10 orders. Nonetheless, ENSM is rare relative to other forms of seasonal migration, consistent with the general tendency of seasonal niche conservatism by migratory species and evolutionarily conserved elevational range limits. For many migratory species and populations, within-species patterns of migratory connectivity are not sufficiently understood to determine ENSM status. ENSM is distinguished by its scale within the broader phenomenon of elevational migration. Critical examination of ENSM illustrates fundamental constraints on the ecology and evolution of migration systems, topographical influences on geographic patterns of migratory connectivity, and the remarkable metabolic flexibility of certain bird species that allows them to occupy disparate elevations across different seasons.

Sign in / Sign up

Export Citation Format

Share Document