A new population of Darwin's fox (Lycalopex fulvipes) in the Valdivian Coastal Range

Indexación: Web of Science; Scielo.Darwin's fox (Lycalopex fulvipes Martin, 1837) is an endemic of the temperate forests of the Coastal Range of southern Chile, that was reported by Charles Darwin in 1834 in southern Chiloé Island (42° S, 74° W; Martin 1837). Initially known exclusively from that island, it was considered both an insular subspecies of the chilla fox (Lycalopex griseus Gray, 1837) (Housse 1953; Clutton-Brock et al. 1976) and a valid species (Martin 1837; Gay 1947; Osgood 1943). In 1990, a mainland population was reported at Nahuelbuta National Park (ca. 450 km north of Chiloé Island, 37° 47′ S, 72° 59′ W; Figure 1a) in sympatry with the chilla and culpeo foxes (Lycalopex culpaeus Molina, 1782) (Jaksic et al. 1990; Medel et al. 1990; Jiménez et al. 1991). This supported its status as a valid species, later confirmed through genetic studies (Yahnke et al. 1996).http://ref.scielo.org/z7mmt

Assessing the accuracy of GEDI data from canopy height and aboveground biomass estimates in Mediterranean forests

Global Ecosystem Dynamics Investigation (GEDI) satellite mission is expanding the spatial bounds and temporal resolution of large-scale mapping applications. Integrating the recent GEDI data into Airborne Laser Scanning (ALS)-derived estimations represents a global opportunity to update and extend forest models based on area based approaches (ABA) considering temporal and spatial dynamics. This study evaluates the effect of combining ALS-based aboveground biomass (AGB) estimates with GEDI-derived models by using temporally coincident datasets. A gradient of forest ecosystems, distributed through 21,766 km2 in the province of Badajoz (Spain), with different species and structural complexity, was used to: (i) assess the accuracy of GEDI canopy height in five Mediterranean Ecosystems and (ii) develop GEDI-based AGB models when using ALS-derived AGB estimates at GEDI footprint level. In terms of Pearson’s correlation (r) and rRMSE, the agreement between ALS and GEDI statistics on canopy height was stronger in the denser and homogeneous coniferous forest of P. pinaster and P. pinea than in sparse Quercus-dominated forests. The GEDIderived AGB models using relative height and vertical canopy metrics yielded a model efficiency (Mef) ranging from 0.31 to 0.46, with a RMSE ranging from 14.13 to 32.16 Mg/ha and rRMSE from 38.17 to 84.74%, at GEDI footprint level by forest type. The impact of forest structure confirmed previous studies achievements, since GEDI data showed higher uncertainty in highly multilayered forests. In general, GEDI-derived models (GEDI-like Level4A) underestimated AGB over lower and higher ALS-derived AGB intervals. The proposed models could also be used to monitor biomass stocks at large-scale by using GEDI footprint level in Mediterranean areas, especially in remote and hard-to-reach areas for forest inventory. The findings from this study serve to provide an initial evaluation of GEDI data for estimating AGB in Mediterranean forestinfo:eu-repo/semantics/publishedVersio

Assessing the Accuracy of GEDI Data for Canopy Height and Aboveground Biomass Estimates in Mediterranean Forests

[EN], Global Ecosystem Dynamics Investigation (GEDI) satellite mission is expanding the spatial bounds and temporal resolution of large-scale mapping applications. Integrating the recent GEDI data into Airborne Laser Scanning (ALS)-derived estimations represents a global opportunity to update and extend forest models based on area based approaches (ABA) considering temporal and spatial dynamics. This study evaluates the effect of combining ALS-based aboveground biomass (AGB) estimates with GEDI-derived models by using temporally coincident datasets. A gradient of forest ecosystems, distributed through 21,766 km2 in the province of Badajoz (Spain), with different species and structural complexity, was used to: (i) assess the accuracy of GEDI canopy height in five Mediterranean Ecosystems and (ii) develop GEDI-based AGB models when using ALS-derived AGB estimates at GEDI footprint level. In terms of Pearson’s correlation (r) and rRMSE, the agreement between ALS and GEDI statistics on canopy height was stronger in the denser and homogeneous coniferous forest of P. pinaster and P. pinea than in sparse Quercus-dominated forests. The GEDI-derived AGB models using relative height and vertical canopy metrics yielded a model efficiency (Mef) ranging from 0.31 to 0.46, with a RMSE ranging from 14.13 to 32.16 Mg/ha and rRMSE from 38.17 to 84.74%, at GEDI footprint level by forest type. The impact of forest structure confirmed previous studies achievements, since GEDI data showed higher uncertainty in highly multilayered forests. In general, GEDI-derived models (GEDI-like Level4A) underestimated AGB over lower and higher ALS-derived AGB intervals. The proposed models could also be used to monitor biomass stocks at large-scale by using GEDI footprint level in Mediterranean areas, especially in remote and hard-to-reach areas for forest inventory. The findings from this study serve to provide an initial evaluation of GEDI data for estimating AGB in Mediterranean forestSIExtremadura Forest ServiceFundação para a Ciência e a Tecnologia I.P. (FCT), Portuga

Asociaciones de larvas de peces en relación a cambios ambientales en las Bahías Chamela, Jalisco y Santiago-Manzanillo, Colima (2001-2002)

Spatial and temporal structure of fish larvae associations and their relationship to the environmental variability were studied at Bahía Chamela, Jalisco, and Santiago-Manzanillo complex, Colima, during 2001-2002. Two spatial aggregations were found, related to the coastal physiography and to the adult habitat. The first was observed at Bahía Chamela, which integrated a combination of species belonging to coastal, demersal and inshore habitats (Bregmaceros bathymaster, Bairdiella sp., Cynoscion sp., Engraulis mordax, and Labrisomidae type 1) and the other in Santiago-Manzanillo composed by species from lagoon and inshore areas (Eucinostomus sp., Abudefduf troschelii, Haemulidae type 2 and 3, and Enneanectes sexmaculatus). Temporal organization was influenced by the environmental shift between two periods (warm and temperate) defined by the regional environmental variability. The warm period was characterized by tropical species (Harengula thrissina, Eucinostomus sp., Auxis sp., and Haemulidae type 3), related to high temperature and rainfall, while temperate period was dominated by species with a tropical-subtropical affinity (B. bathymaster, Bairdiella sp., Cynoscion sp., and E. mordax) and related to lower temperature and elevated nutrients, chlorophyll a and plankton concentrations.Se analizó la influencia de los factores ambientales sobre las asociaciones espacio-temporales de larvas de peces frente a Bahía Chamela, Jalisco y el conjunto de bahías Santiago-Manzanillo, Colima, durante un ciclo anual (2001-2002). Se identificaron dos agrupaciones relacionadas con la fisiografía de la costa y el hábitat de los adultos, una frente a Bahía Chamela integrada por una mezcla de especies de hábitats costero, demersal e intermareal-submareal (Bregmaceros bathymaster, Bairdiella sp., Cynoscion sp., Engraulis mordax y Labrisomidae tipo 1) y otra en Santiago-Manzanillo compuesta por especies de origen lagunar e intermareal-submareal (Eucinostomus sp., Abudefduf troschelii, Haemulidae tipos 2 y 3, así como Enneanectes sexmaculatus). La organización temporal estuvo influenciada por la alternancia entre dos periodos (cálido y templado) definidos por la variabilidad ambiental regional. El periodo cálido estuvo caracterizado por especies principalmente tropicales (Harengula thrissina, Eucinostomus sp., Auxis sp. y Haemulidae tipo 3), relacionadas con una mayor temperatura y precipitación pluvial, en cambio durante el periodo templado dominaron las especies de afinidad tropical-subtropical (B. bathymaster, Bairdiella sp., Cynoscion sp. y E. mordax), relacionadas con una menor temperatura e incrementos en las concentraciones de nutrimentos, clorofila-a y zooplancton

Impact of Lippia palmeri S. Watson during kid suckling and growth

The goat kids raising is an important part of goat farms, since its development provides replacements for the dairy herd or the sale of meat. Therefore, a growth test of goats kids was carried out and the addition of oregano Lippia palmeri S. Watson and the synchronization of nutrients in the diets of the mothers was evaluated to determine its effect on the growth of their offsprings. Seventheen goats kids were valued which were those born under the 4 diets (treatments) consumed by their mothers, divided in 6 goat kids in (T1, ASYNC with ORE), 5 goat kids in (T2, ASYNC without ORE), 3 goat kids in (T3, SYNC without ORE) and 3 goat kids in (T4, SYNC with ORE), where the variables of weight gain (kg) and daily milk consumption (kg) were measured during 60 days. No significant differences (p>0.05) were found between treatments, showing an average daily weight gain in T1 (ASYNC with ORE= 0.0895±0.018 kg), T2 (ASYNC without ORE= 0.0892±0.026 kg), T3 (SYNC without ORE= 0.0934±0.035 kg) and T4 (SYNC with ORE= 0.118±0.026 kg) and average daily milk consumption in T1 (ASYNC with ORE= 0.509±0.240 kg), T2 (ASYNC without ORE= 0.580±0.205 kg), T3 (SYNC without ORE= 0.553±0.190 kg) and T4 (SYNC with ORE= 0.717±0.202 kg), without having a treatment that significantly outperformed the others, and a significant and positive correlation (r=0.879, p=0.0001) was also shown between the two variables studied.Objective: raising kids is a fundamental activity in goat production, since their development is the source of replacements for the dairy herd or the sale of meat. Therefore, the impact in the kids’ growth of adding Lippia palmeri S. Watson oregano to the goat diet was evaluated. Materials and methods: a total of 17 kids born from mothers who consumed the four diets (treatments) were evaluated. They were divided as follows: 6 kids in T1 (ASINC with ORE); 5 kids in T2 (ASINC without ORE); 3 kids in T3 (SINC without ORE); and 3 kids in T4 (SINC with ORE). The weight gain (kg) and daily milk consumption (kg) variables were evaluated for 60 days. Results: no significant differences were found (p>0.05) between treatments, showing an average daily weight gain of 0.0895 ±0.018 kg in T1 (ASINC with ORE), 0.0892 ±0.026 kg in T2 (ASINC without ORE), 0.0934 ±0.035 kg in T3 (SINC without ORE), and 0.118±0.026 kg in T4 (SINC with ORE). Meanwhile, the average daily milk consumption was 0.509 ±0.240 kg in T1 (ASINC with ORE), 0.580±0.205 kg in T2 (ASINC without ORE), 0.553±0.190 kg in T3 (SINC without ORE), and 0.717±0.202 kg in T4 (SINC with ORE). Conclusions: no treatment was significantly higher than the others. A significant and positive correlation (r=0.879, p=0.0001) was detected between the two variables under study

Economía y finanzas sociales: avances en la investigación

Esta obra colectiva propone un cambio de paradigma en la investigación científica, financiera y económica, cuyo centro de atención es reducir las desigualdades sociales y económicas, mejorar la sostenibilidad ambiental y la creación eficiente de valor económico. Desde un punto de vista crítico y mediante diversos enfoques teóricos, metodológicos y disciplinares, los autores analizan el esquema financiero predominante en las economías de mercado, al tiempo que abordan temas como la inclusión financiera, la banca ética o las experiencias e intervenciones en y sobre la economía social.ITESO, A.C