Results 1 to 10 of about 4,408 (163)

Plasticity of the Tannosome Ontogenesis in the Tracheophyta [PDF]

open access: yesJournal of Plant Sciences (Science Publishing Group), 2014
The tannosome, an organelle producing condensed tannins in the chlorophyllous organs of the Tracheohyta, is formed from the unstacked granal thylakoids by pearling into tiny spheres [1]. Other variants of intraplastidial ontogenesis of the tannosomes were investigated in the Tracheophyta by transmission electron microscopy.
Benoît Schoefs
exaly   +14 more sources

Ferns of Viçosa, Minas Gerais State, Brazil: Polypodiaceae (Polypodiales, Filicopsida, Tracheophyta) [PDF]

open access: yesHoehnea (revista), 2017
ABSTRACT As part of an ongoing project treating the ferns and lycophytes from the region of Viçosa, MG, Brazil, we here present the taxonomic treatment of Polypodiaceae. We performed field expeditions in remaining forest patches and disturbed sites from 2012 to 2016. We also revised the Polypodiaceae collection of VIC herbarium. In the region of Viçosa,
Pedro Bond Schwartsburd
exaly   +5 more sources

Macroalgas, microalgas y cianobacterias epífitas del pasto marino Thalassia testudinum (Tracheophyta: Alismatales) en Veracruz y Quintana Roo, Atlántico mexicano [PDF]

open access: yesRevista De Biologia Marina Y Oceanografia, 2017
espanolEl pasto marino Thalassia testudinum, alberga una alta riqueza especifica de epifitas debido a su morfologia y abundancia en la costa del Atlantico mexicano. Los epifitos son un importante elemento por su composicion taxonomica y grupos funcionales, ademas pueden utilizarse como bioindicadores.
Luz Elena Mateo-Cid
exaly   +4 more sources

Removal of Vanadium(III) and Molybdenum(V) from Wastewater Using Posidonia oceanica (Tracheophyta) Biomass

open access: yesPLoS ONE, 2013
The use of dried and re-hydrated biomass of the seagrass Posidonia oceanica was investigated as an alternative and -low-cost biomaterial for removal of vanadium(III) and molybdenum(V) from wastewaters. Initial characterisation of this biomaterial identified carboxylic groups on the cuticle as potentially responsible for cation sorption, and confirmed ...
Chiara Pennesi, Francesca Beolchini
exaly   +5 more sources

Ecotoxicity Thresholds for Ametryn, Diuron, Hexazinone and Simazine in Fresh and Marine Waters [PDF]

open access: yes, 2018
Triazine and urea herbicides are two groups of photosystem II inhibiting herbicides frequently detected in surface, ground and marine waters. Yet, there are few water quality guidelines for herbicides. Ecotoxicity thresholds (ETs) for ametryn, hexazinone
A Claver   +27 more
core   +1 more source

Narcissus dubius, Narcisse Douteux [PDF]

open access: yes, 2018
This species is endemic to southern France and eastern Spain. It is assessed as Least Concern because it has a widespread distribution, occurs in several protected areas throughout its range and its population is not expected to significantly decline in ...
Carapeto, André   +5 more
core   +1 more source

Juncus emmanuelis [PDF]

open access: yes, 2018
This species is endemic to a small area in the southwestern Iberian Peninsula, with subpopulations scattered in approximately 16 localities. It is assessed as Endangered (EN B2ab(ii,iii,iv)) because it has an Area of Occupancy (AOO) of less than 500 km2 ...
Carapeto, André   +4 more
core   +1 more source

Zannichellia contorta [PDF]

open access: yes, 2018
This species is native to southern, central and eastern Spain, with an old record from the Atlas Mountains in northern Morocco requiring confirmation. The species is very sensitive to eutrophication and deterioration of water quality.
Carapeto, André   +5 more
core   +1 more source

Are genetic databases sufficiently populated to detect non-indigenous species? [PDF]

open access: yes, 2016
Correct species identifications are of tremendous importance for invasion ecology, as mistakes could lead to misdirecting limited resources against harmless species or inaction against problematic ones.
Bailey, Sarah   +3 more
core   +1 more source

Checklist of the Marine Fauna and Flora Reported from the Region of Aransas Pass, Texas [PDF]

open access: yes, 1960
This checklist is of preliminary form with the hope that this will be a beginning for a more complete annotated list of the fauna and flora of this region. In many cases, this list is quite obviously incomplete, such as the algae, for which there are
Trott, Lamarr B.
core   +1 more source

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