Biologia Evolutiva, Ecologia i Ciències Ambientals: Envíos recientes
Mostrando ítems 261-280 de 1903
Development of the femur - Implications for age and sex determination.
Growth of four variables of the femur (diapyseal length, diaphyseal length plus distal epiphysis, maximum length and vertical diameter of the head) was analyzed by polynomial regression for the purpose of evaluating its ...
Sea surface temperature, rather than land mass or geographic distance, may drive genetic differentiation in a species complex of highly dispersive seabirds
Seabirds, particularly Procellariiformes, are highly mobile organisms with a great capacity for long dispersal, though simultaneously showing high philopatry, two conflicting life-history traits that may lead to contrasted ...
Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and ...
Catalogue of lichens (and some related fungi) of Navarino Island, Cape Horn Biosphere Reserve, Chile
The Cape Horn Biosphere Reserve, Chile, has been identified as a hotspot of bryophyte diversity and it has been suggested to be the same for lichens. However, in contrast to the extensive bryophyte studies, only preliminary ...
Poblacions, diversitat i història: Memòries de bioantropologia
En aquest informe es descriuen les poblacions investigades des de l'Antropologia biològica i els resultats obtinguts durant quaranta anys de recerca. Es relaciona la diversitat biològica amb la història de les poblacions ...
The role of schizotypal traits and the OXTR gene in theory of mind in schizophrenia: A family-based study
Background. There is consistent evidence that theory of mind (ToM) is impaired in schizophrenia (SZ); however, it remains unclear whether such deficits are trait- or state-dependent. We evaluated ToM in patients with ...
Large differences in the proportion of people with reduced MTHFR Enzymatic activity in Eurasia: allele and haplotype distribution of MTHFR-C677T and MTHFR-A1298C polymorphisms in Spain and Siberia
Adequate levels of folate are crucial for human development. MTHFR (Methylene tetrahydrofolate reductase) is involved in the metabolism of folic acid and other B vitamins. The aim of this work is to examine the allele ...
Historical processes constrain metacommunity structure by shaping different pools of invertebrate taxa within the Orinoco basin
Aim To identify and characterize the distribution of invertebrate taxa in the Orinoco basin and how their distribution affects the metacommunity structure along the river network. Location Meta and Guaviare sub‐basins, ...
Comparative performance of ground vs. aerially assessed RGB and multispectral indices for early-growth evaluation of maize performance under phosphorus fertilization
Low soil fertility is one of the factors most limiting agricultural production, with phosphorus deficiency being among the main factors, particularly in developing countries. To deal with such environmental constraints, ...
L'Estanyo, un estany interessant a la Vall d'Aran
En un petit estany de la Vall d'Aran, a 1640 m. d¿altitud s'ha trobat Luronium natans ( L.) Rafin., planta aquàtica d'àrea atlántica, nova per a la flora deis Països Catalans. També creixen a les vores de l'estany altres ...
Estado biológico de la pradera de Posidonia oceanica de las Islas Medas. Informe de 1997
Podeu consultar l'Informe complet a: http://hdl.handle.net/2445/23662
Seguiment anual de Briozous, Gorgònia vermella i Coves a la Reserva Natural Parcial Marina de les Medes del Parc Natural del Montgrí, les illes Medes i el Baix Ter. Memòria 2017
Les mesures de protecció a les illes Medes van entrar en vigor el 1983, amb una Ordre de la Generalitat de Catalunya que establia la Reserva Marina de les illes Medes i que comportava restringir l’activitat en aquest ...
An approach to the study of post-depositional processes affecting inter-proximal wear facets and buccal enamel surfaces in hominid teeth
The reconstruction the diet and dietary related habits of our ancestors is very informative about their evolutionary behaviour and adaptability. One method to infer diet from skeletal remains is to study the dental microwear ...
Anti-inflammatory activity in selected Antarctic benthic organisms
Antarctic benthos was prospected in search for anti-inflammatory activity in polar benthic invertebrates, in two different geographical areas: deep-bottoms of the Eastern Weddell Sea and shallow-waters of the South Shetland ...
Keys to world Charipinae (Hymenoptera, Cynipoidea, Figitidae)
Eight genera of Charipinae are defined, keyed out, and illustrated. Keys for all charipine species within each valid genus, including Alloxysta, Apocharips, Dilyta, Phaenoglyphis, and Thoreauana, are presented, except for ...
Resposta dels arbres i dels boscos al canvi climàtic
Durant el darrer segle, arbres, boscos i ecosistemes han estat responent a diversos efectes del canvi global, com són l"escalfament de la superfície terrestre, l"increment de la variabilitat climàtica o l"augment de la ...
Adiciones a la flora vascular del N de Marruecos (II). [Notas taxonómicas y corológicas para la flora de la Península Ibérica y el Maghreb, nº 157]
Estas notas se enmarcan en la serie iniciada por nosotros unos año atrás en Lagascalia (Romo & Soriano, 2004). En ellas damos a conocer resultados de las campañas efectuadas el año 2004 dentro del proyecto Estudio biogeográfi ...
Novetats per a la brioflora dels Pirineus Centrals
Con esta nota damos a conocer una lista de diez especies de briófitos procedentes del Valle de Aran y de la Alta Ribagorza. Se trata de especies muy raras en el territorio peninsular y algunas de ellas son nuevas para Cataluña.
Leaf water δ18O reflects water vapour exchange and uptake by C3 and CAM epiphytic bromeliads in Panama
The distributions of CAM and C3 epiphytic bromeliads across an altitudinal gradient in western Panama were identified from carbon isotope (δ13C) signals, and epiphyte water balance was investigated via oxygen isotopes ...
Natural chemical control of marine associated microbial communities by sessile Antarctic invertebrates
Organisms living in the sea are exposed to fouling by other organisms. Many benthic marine invertebrates, including sponges and bryozoans, contain natural products with antimicrobial properties, since microbes usually ...
