Results 81 to 90 of about 11,347 (217)
PRIMER REPORTE DE Pteridium caudatum (DENNSTAEDTIACEAE) EN LA ISLA DE PROVIDENCIA, COLOMBIA
Acta Biológica Colombiana, 2011 Se reporta por la primera vez la presencia del helecho invasor Pteridium aquilinum(L.) Kunh en la Isla de Providencia, Colombia. La especie ha sido encontrada confinada como planta decorativa en jardines y patios, como silvestre en la localidad El Pico ...
Brigitte Gavio, Alerxandra Tobar-Vargas
doaj
Genes Translocated into the Plastid Inverted Repeat Show Decelerated Substitution Rates and Elevated GC Content. [PDF]
, 2016 Plant chloroplast genomes (plastomes) are characterized by an inverted repeat (IR) region and two larger single copy (SC) regions. Patterns of molecular evolution in the IR and SC regions differ, most notably by a reduced rate of nucleotide substitution ...
Kuo, Li-Yaung +3 more
core +1 more source
Journal of Vegetation Science, Volume 37, Issue 1, January/February 2026.Shifting grazing regimes alter grasslands, however the relative roles of species turnover versus intraspecific variation (ITV) underpinning trait change are poorly understood. Using a 20‐year grazing experiment in the Scottish uplands,we found that grazing‐driven functional change in grass communities are primarily driven by ITV rather than species ...
Susan E. Eshelman +5 more
wiley +1 more source
Semina: Ciências Agrárias, 2008 The Pteridium aquilinum is one toxic plant present in several countries of the world. The chronic ingestion causes diseases to livestock with negative economics repercussion.
Wilmar Sachetin Marçal +3 more
doaj +1 more source
A Membrane Peculiar to the Egg in the Gametophyte of Pteridium aquilinum [PDF]
Nature, 1962 INVESTIGATIONS of the ultrastructure of the cells taking part in oogenesis in Pteridium aquilinum have shown that the mature egg possesses a membrane lying between the plasmalemma and the cellulose wall, and not present in adjacent cells (Fig. 1). After fixation in potassium permanganate and staining with uranyl acetate this additional membrane is ...
P. R. BELL, K. MÜHLETHALER
openaire +1 more source
Efectos del fuego sobre el quimismo de los arroyos en cuencas de landa [PDF]
, 1985 Effects of fire on stream water chemistry in heathland watersheds. Conductivity, PH. and concentrations of Nat. K + , Ca2+ and Mg2+ were monitored for up to two years in baseflow water of four streams draining burned and unburned watersheds in Calluna ...
Belillas, Cristina +1 more
core +1 more source
A survey of plant and algal genomes and transcriptomes reveals new insights into the evolution and function of the cellulose synthase superfamily [PDF]
, 2014 Background Enzymes of the cellulose synthase (CesA) family and CesA-like (Csl) families are responsible for the synthesis of celluloses and hemicelluloses, and thus are of great interest to bioenergy research.
Cao, Huansheng +3 more
core +2 more sources
Semina: Ciências Agrárias, 2002 Bovine enzootic haematuria (EH) occurs worldwide and is endemic in regions with bracken fern (Pteridium aquilinum) infested grassland. EH is chronic disease that is characterized by clinical signs of intermitent haematuria, anemia and progressive ...
Amauri Alcindo Alfieri +3 more
doaj +1 more source
Plantas tóxicas para ruminantes do Sudoeste de Goiás
Ciência Rural, 2014 Com o objetivo de verificar quais são as plantas incriminadas como tóxicas para ruminantes do Sudoeste de Goiás, foram realizadas 108 entrevistas com produtores rurais, médicos veterinários, zootecnistas e agrônomos de 18 municípios da região.
Fabiano José Ferreira de Sant'Ana +6 more
doaj +1 more source
Historical Grassland Turboveg Database Project. 2067 Relevés recorded by Dr Austin O’ Sullivan 1962 – 1982 [PDF]
, 2007 User Guide and CD of Database are availableEnd of project reportThe more common grassland types occupy about 70% of the Irish landscape (O’Sullivan, 1982), but information on these vegetation types is rare.
Bourke, David +3 more
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