Plants Near Extinction
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Population genetic structure of Encholirium (bromeliaceae) and implications for conservation. / Estrutura genética de populações de Encholirium (Bromeliaceae) e implicações para sua conservação.
Encholirium é um gênero de Bromeliaceae de distribuição restrita ao território brasileiro, ocorrendo exclusivamente em afloramentos rochosos nos domínios do Cerrado, Caatinga e Floresta Atlântica, e com centro de diversidade na Cadeia do Espinhaço de Minas Gerais. Possui 23 espécies, das qua is 12 não estão protegidas por nenhuma Unidade de Conser
Publicado em: 2004
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2. Correlated terrestrial and marine evidence for global climate changes before mass extinction at the Cretaceous–Paleogene boundary
Terrestrial climates near the time of the end-Cretaceous mass extinction are poorly known, limiting understanding of environmentally driven changes in biodiversity that occurred before bolide impact. We estimate paleotemperatures for the last ≈1.1 million years of the Cretaceous (≈66.6–65.5 million years ago, Ma) by using fossil plants from North Dakot
The National Academy of Sciences.
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3. Food-plant niche selection rather than the presence of ant nests explains oviposition patterns in the myrmecophilous butterfly genus Maculinea.
It has been suggested that the socially parasitic butterfly Maculinea alcon detects ant odours before ovipositing on initial larval food plants near colonies of its obligate ant host Myrmica ruginodis. It has also been suggested that overcrowding on food plants near M. ruginodis is avoided by an ability to detect high egg loads, resulting in a switch to sele
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4. Futile transmembrane NH4+ cycling: A cellular hypothesis to explain ammonium toxicity in plants
Most higher plants develop severe toxicity symptoms when grown on ammonium (NH\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} \begin{equation*}{\mathrm{_{4}^{+}}}\end{equation*}\end{document}) as
The National Academy of Sciences.