Results 21 to 30 of about 4,194 (114)
Acta Biológica ColombianaLas especies exóticas invasoras representan una amenaza significativa para la biodiversidad mundial. En la península de Baja California (México) estos organismos han proliferado y las medidas tomadas han sido insuficientes para mitigar su expansión y ...
Edith Andrea Navarro-Tiznado +7 more
doaj +1 more source
Revista de Metalurgia, 2018 Se ha utilizado la resina de intercambio aniónico Amberlite 958 para la eliminación de manganeso(VII) de aguas con distintos valores de pH. Además de esta variable, se han investigado otras que pueden afectar al proceso de carga del metal en la resina ...
Francisco J. Alguacil
doaj +1 more source
Effects of restoration practices on biodiversity in temperate and boreal forests
Conservation Biology, EarlyView.Abstract Several restoration practices are used to mitigate and compensate for the negative effects of large‐scale forestry on biodiversity in temperate and boreal forests. A comprehensive synthesis of the benefits of these practices across taxa is missing. We conducted a systematic review and meta‐analysis on this topic.
Malin Tälle +2 more
wiley +1 more source
Sex‐Specific Atlantic Salmon Upstream Passage and Fallback at a Natural Cascade After Dam Removal
Fisheries Management and Ecology, EarlyView.ABSTRACT In the Boquet River (NY, USA) a low‐head dam set above a ~200‐m bedrock cascade was removed in 2015. We used radio‐telemetry to assess landlocked Atlantic salmon passage at the remaining cascade (2020, 2022). Across years, 52% of males (13/25) attempted cascade passage whereas females made no discernable attempts (0/11).
Kurt C. Heim +5 more
wiley +1 more source
Revista de Metalurgia, 2006 Se investigaron resinas de intercambio aniónico con respecto a su capacidad para la eliminación de arsénico contenido en agua. Se utilizó agua del pozo V de Zimapán, Hidalgo, México, cuya concentración promedio es de 480 ± 11 μg·l-1 de arsénico y es ...
F. Pérez-Moreno +5 more
doaj +1 more source
El Cálculo y su Enseñanza, 2023 El método de eliminación de Gauss proporciona la solución numérica de un sistema Ax=b. La Regla de Cramer, proporciona una fórmula para encontrar la solución del sistema cuando A es nxn y la solución es única.
Humberto Madrid de la Vega
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People and Nature, Volume 8, Issue 6, Page 1943-1956, June 2026.Abstract Remote sensing studies show that ephemeral forest regeneration is widespread in the tropics, limiting the climate and biodiversity benefits from net increases in forest cover. Socioeconomic, biophysical and landscape variables can help explain the spatial distribution of reforestation reversals.
Francis H. Joyce
wiley +1 more source
Does the Community Understand the Community Guidelines?
Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT Amid continued public controversy and political debate about online speech governments and civil society have pushed social media platforms to increase transparency around how they regulate speech, through community guidelines and content moderation systems, to support users to hold companies accountable for content removals.
Friederike Quint +4 more
wiley +1 more source
Impacto en el sector agrícola y agropecuario por la derogación de la Compensación Universal en 2019
Revista Biológico Agropecuaria Tuxpan, 2019 La idea principal del presente trabajo de investigación, es determinar el impacto que están teniendo los agricultores de nuestra república mexicana en relación al pago de impuestos y su liquidez para pagarlos.
Marisa Aideé Araiza Santillán +4 more
doaj +1 more source
An integrated approach to balance freshwater connectivity restoration and invasion risk
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Habitat fragmentation negatively affects many native migratory fish populations. However, this fragmentation can also prevent the spread and establishment of invasive species. We modified the dendritic connectivity index (DCI), a commonly used freshwater connectivity metric, to account for multiple invasive dispersal pathways in estimates of ...
Alex Arkilanian +3 more
wiley +1 more source