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Mapping estuarine vegetation using satellite imagery: The case of the invasive species Baccharis halimifolia at a Natura 2000 site
(2019-02)The invasive shrub Baccharis halimifolia is a threat to the environmental health of many estuarine protected areas throughout Europe. It displaces saltmarsh vegetation and creates monospecific stands that diminish the ... -
Marine Insects
(2008)Although insects are one of the most diverse groups of organisms on earth, relatively few species are found associated with marine habitats. The majority of these marine species live in intertidal or coastal habitats and ... -
Masdevallia coccinea
(2019)Masdevallia coccinea is a widely distributed species in the Eastern Cordillera of Colombia, being locally abundant. It is “a most remarkable plant”, with large, bright red flowers. The lateral sepals are tail-less, and the ... -
Masdevallia encephala
(2017)The habit of Masdevallia encephala is quite like any other species of the genus, however, the infated, almost completely fused, sepal blades, and bristle-like tails result in a very unique sub-globose fower. Te name, which ... -
Masdevallia hortensis
(2017)Masdevallia hortensis is similar to most other species of Masdevallia subgenus Meleagris, it can be distinguished by the callus at the apex of the dorsal sepal and the revolute, white, lateral sepals with a red-purple mid ... -
Masdevallia Leonor-baeziana (Pleurothallidinae): a New Species from the Andean-Amazonian Foothills of Caquetá, Colombia
(2023-05-24)We describe and illustrate a new species of Masdevallia from the Andean-Amazonian foothills of Caquetá, Colombia. Masdevallia leonor-baeziana belongs to Masdevallia subsect. Saltatrices, within the M. constricta group. It ... -
Masdevallia luerorum (Orchidaceae: Pleurothallidinae), a new species from Costa Rica
(2017)Masdevallia luerorum from the southern Pacific region of Costa Rica is described and illustrated. It resembles M. lata, but differs in the single flowered inflorescence, the shorter sepals, the broad and cylindrical sepaline ... -
Masdevallia racemosa
(2018)Masdevallia racemosa, an endemic species from the Central Cordillera in Cauca department, is recognized by its long repent habit, with a creeping or ascending rhizome, a loose inflorescence of successive and simultaneous ... -
Masdevallia Ruiz & Pav. [with the new species Masdevallia bellissima]
(2022-02)Costa Rican species of Masdevallia are presented and discussed. A new species, Masdevallia bellissima, is described and illustrated. -
Mass movement of individuals at Carara National Park
(2021)The video shows the movement of individuals of the Green-and-Black Poison Dart Frog, Dendrobates auratus, under rainy conditions. The filmed individuals moved close to the researchers and in close proximity of conspecifics. ... -
Mastering analytical challenges for the characterization of pentacyclic triterpene mono- and diesters of Calendula officinalis flowers by non-aqueous C30 HPLC and hyphenation with APCI-QTOF-MS
(2016-01-25)Pentacyclic triterpene mono- and diesters have been isolated from Calendula officinalis flowers. GC–MS, APCI-Exactive Orbitrap HR-MS and NMR allowed to identify the triterpene skeleton in various samples (different triterpene ... -
Matambú y Matambuguito, buenas noticias
(2013-06-26)Se comenta la situación de la escasez de agua, y la seguridad alimentaria y nutricional, en el Territorio Indígena de Matambú. -
Maternal care and offspring behaviour in three theridiid species (Araneae, Theridiidae)
(2009)Maternal care is widespread in theridiids. Theridion evexum Keyserling breaks the threads in the outer layer of the egg sac to allow its spiderlings to leave the sac. Achae-aranea tesselata (Keyserling) and Anelosimus ... -
Maternal health in Central America: The role of medicinal plants in the pregnancy-related health and well-being of indigenous women in Central America
(2018)Over the past 20 years, Central America (CA) has made considerable progress in improving the health status of its populations. However, in some countries, the overall health status remains below average with poor outcomes ... -
Maternally derived chemical defenses are an effective deterrent against some predators of poison frog tadpoles (Oophaga pumilio)
(2014)Parents defend their young in many ways, including provisioning chemical defences. Recent work in a poison frog system offers the first example of an animal that provisions its young with alkaloids after hatching or birth ... -
Mating and aggressive behaviour of Brachyrhaphis olomina (Cyprinodontiformes: Poeciliidae)
(2017)Despite the increasing interest in the use of intro-mittent male genitalia and coercive mating behaviour in poeciliids, detailed studies of the mating behaviour of most species in this family are lacking. We describe here ... -
Mating system and pollen flow between remnant populations of the endangered tropical tree, Guaiacum sanctum (Zygophyllaceae)
(2011)Tropical trees are generally long-lived making it difficult to assess the long-term effects of habitat fragmentation on genetic diversity. Maintenance of genetic diversity in fragmented landscapes is largely dependent on ... -
Mating System of the Tent-Making Bat Artibeus watsoni (Chiroptera: Phyllostomida
(2008-12)Vertebrate mating systems are influenced by ecological and phylogenetic factors, and the variation observed in mating behavior is frequently attributable to the extent to which male assistance in the rearing of offspring ... -
Matisia Tinamasiiana (BOMBACACEAE): una nueva especie arborescente del Pacífico Central de Costa Rica
(1998)El conocimiento de la Flora de Costa Rica ha sido, en gran parte, producto de la investigación y exploración botánica realizada principalmente dentro de las áreas protegidas estatales o privadas. Las áreas fuera de los ... -
Maxillaria sanguinea f. exsanguis f. nov. A new and rare form of an attractive species of Maxillaria (Orchidaceae)
(2020-05)A new form of Maxillaria sanguinea with pale, yellowish and white flowers, is described from Costa Rica as f. exsanguis, and a composite illustration of the new taxon is provided.