Biologia Evolutiva, Ecologia i Ciències Ambientals: Envíos recientes
Mostrando ítems 261-280 de 1903
Evolutionary history, genomic adaptation to toxic diet, and extinction of the carolina Parakeet
As the only endemic neotropical parrot to have recently lived in the northern hemisphere, the Carolina parakeet (Conuropsis carolinensis) was an iconic North American bird. The last surviving specimen died in the Cincinnati ...
Aportació al coneixement florístic de les Guilleries i del Collsacabra (Catalunya Oriental), III
En la present nota indiquem un seguit de novetats corològiques per a la flora vascular dels massissos de les Guilleries i del Collsacabra.
Seguimiento de la pradera de Posidonia Oceanica de les Islas Medes. Ejercicio 2001
Podeu consultar l'Informe complet a: http://hdl.handle.net/2445/23672
Impact of olive saplings and organic amendments on soil microbial communities and effects of mineral fertilization
Plant communities and fertilization may have an impact on soil microbiome. Most commercial olive trees are minerally fertilized, while this practice is being replaced by the use of organic amendments. Organic amendments ...
Hydraulic and biological controls of biofilm nitrogen uptake in gravel-bed streams
Epibenthic biofilms are important in regulating nitrogen (N) fluxes in stream ecosystems. The efficiency of the regulation is controlled by hydraulic and biological processes and their interactions. However, knowledge on ...
Seguiment del medi marí al Parc Natural de Cap de Creus i al Parc Natural del Montgrí, les Illes Medes i el Baix Ter. Memòria 2018.
Aquesta memòria recull els resultats del grup de treball del Departament d’Ecologia de la Universitat de Barcelona relatiu al seguiment del medi marí al Parc Natural de Cap de Creus i al Parc Natural del Montgrí, les Illes ...
Avaluació de la població de llagostes (Palinurus elephas) de les Illes Medes. Exercici 2001
Podeu consultar l'Informe complet a: http://hdl.handle.net/2445/23672
Season of birth and subclinical psychosis: systematic review and meta-analysis of new and existing data
Season of birth (SOB) has been shown to modify the risk of several health outcomes, including a number of neuropsychiatric disorders. Empirical evidence indicates that subclinical forms of psychosis in the general population ...
S.O.S. Pinna nobilis: a mass mortality event in western Mediterranean Sea.
A mass mortality event (MME) impacting the bivalve Pinna nobilis was detected across a wide geographical area of the Spanish Mediterranean Sea (Western Mediterranean Sea) in early autumn 2016. Underwater visual censuses ...
Testing dietary hypotheses of East African hominines using buccal dental microwear data
Abstract There is much debate on the dietary adaptations of the robust hominin lineages during the Pliocene-Pleistocene transition. It has been argued that the shift from C3 to C4 ecosystems in Africa was the main factor ...
25-years of biomonitoring in two mediterranean streams (Llobregat and Besos basins, NE Spain)
Biological water quality changes in two Mediterranean river basins from a network of 42 sampling sites assessed since 1979 are presented. In order to characterize the biological quality, the index FBILL, designed to ...
Seasonal variation in AMF colonisation, soil and plant nutrient content in gypsum specialist and generalist species growing in P‑poor soils
Aims: Gypsum soils are P-limited atypical soils that harbour a rich endemic flora. These singular soils are usually found in drylands, where plant activity and soil nutrient availability are seasonal. No previous studies ...
Effect of environmental enrichment on the body shape of the pumpkinseed
How the morphology of captive-reared fish is affected by structural enrichment in their rearing tanks is not well understood. Some studies have suggested that deficiencies in rearing environments could produce inappropriate ...
Hydrological evidence for a North Atlantic oscillation during the Little Ice Age outside its range observed since 1850.
An annual-resolved precipitation reconstruction for the last 800 yr in Southern Spain has been performed using stable carbon isotope (δ13C) of Pinus nigra tree rings. The reconstruction exhibits high- to low-frequency ...
Green tea extracts containing Epigallocatechin-3-Gallate modulate facial development in Down syndrome
risomy of human chromosome 21 (Down syndrome, DS) alters development of multiple organ systems, including the face and underlying skeleton. Besides causing stigmata, these facial dysmorphologies can impair vital functions ...
α-Tocopherol in chloroplasts: Nothing more than an antioxidant?
Among the eight forms of vitamin E, only tocopherols are essential compounds that are distributed throughout the entire plant kingdom, with α-tocopherol being the most predominant form in photosynthetic tissues. At the ...
Leaf δ15N as a physiological indicator of the responsiveness of N2-fixing alfalfa plants to elevated [CO2], temperature and low water availability
The contribution of carbon and nitrogen reserves to regrowth following shoot removal has been studied in the past. However, important gaps remain in understanding the effect of shoot cutting on nodule performance and its ...
Isotopic evidence of limited exchange between Mediterranean and eastern North Atlantic fin whales
RATIONALE The relationship between stocks of fin whales inhabiting the temperate eastern North Atlantic and the Mediterranean Sea is subject to controversy. The use of chemical markers facilitates an alternative insight ...
Notas floristicas, I
Las suaves colinas graníticas que respaldan la población de La Roca del Valles, primeras ondulaciones de la sierra de Marina para el que viene de la llanura vallesana, albergan una vegetación bastante interesante.
Aportació a la flora micològica del Parc Nacional d'Ordesa i Monte Perdido (Prineus Centrals)
Present em un catàleg florístic de les espècies recol.lectades en el curs d'una exploració del Parc Nacional d'Ordesa i Monte Perdido (Pirineus centrals) a la tardor de 1989. en el qual comentem i il.lustrem les que ...
