Deep-water Bryophytes From Waldo Lake, Oregon

Wagner, David H.; Christy, John A.; Larson, Douglas W.

doi:10.1080/07438140009354226

Cited by 8 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flagelliform habit, the 1-celled leaf tips and the broad vitta, observed also in the type of H. obtusifolius from Serra do Itatiaia, are the most distinctive features of this phenotype. The aberrant morphology of the aquatic H. sendtneri plants fits the notion that submerged bryophytes frequently have unusual morphologies (Vitt & Glime, 1984;Wagner, et al, 2000;de Winter & Beever, 2004;Rankin, et al, 2017). De Winter & Beever (2004) found that bryophytes in deep-water lakes of New Zealand often possessed narrow, sterile shoots with scale-like leaves and reduced branching, and they suggested that these shoots reflected an extended juvenile state of the species.…”

Section: Resultssupporting

confidence: 58%

Mass occurrence of the liverwort Herbertus sendtneri in a glacial lake in the Andes of Colombia

Gradstein

Vanderpoorten

Reenen

et al. 2018

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

Muchas especies de briófitas tropicales crecen en habitats periódicamente inundados como lechos del río, pantanos y cascadas, pero se presentan pocos briófitas sumergidas permanentamente y están más que todo en lagunas de alta montaña. Su identificación podría ser dificil por la modificación de rasgos inducidos por el medio acuático. Aquí se trata de una población sumergida del género Herbertus de las hepáticas de una laguna glaciar a 4120 m en la Sierra Nevada del Cocuy, Colombia. Las plantas acuáticas caracterizadas por el porte enano y los apices obtusos de las hojas. Se ha identificado como H. oblongifolius, un taxon raro descrito de Brazil y recientemente, basado en la morfología, ubicada como sinónima de la especie variable, H. sendtneri, de distribución amplia. Análisis molecular ha confirmado que las plantas acuáticas pertenecen a H. sendtneri. La semejanza de las plantas acuáticas con las ramitas de H. sendtneri parece de sugerir un fenótipo juveníl. Las plantas acuáticas probablemente tienen su origen en una población en las rocas y lajas cercanas y han llegado a la laguna a través de ramitas vegetativas caedizas y así traidas a la laguna por el viento y el agua, o plantas enteras entraron a la laguna con lluvias fuertes inundando las lajas. © 2018. Acad. Colomb. Cienc. Ex. Fis. Nat.

show abstract

Section: Resultssupporting

confidence: 58%

Mass occurrence of the liverwort Herbertus sendtneri in a glacial lake in the Andes of Colombia

Gradstein

Vanderpoorten

Reenen

et al. 2018

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

show abstract

“…Benthic vegetation can help to maintain water clarity by sequestering nutrients on the bottom beyond the reach of phytoplankton (Wagner et al 2000). Benthic photosynthesis is also a source of dissolved oxygen that helps to mitigate internal loading of P, and it probably contributes to bulges in dissolved oxygen concentrations at depth in both ponds (Colman and Waldron 1998, Colman and Friesz 2001, ESS Group 2014-2017, Walker 2017.…”

Section: Lakes Of Light In the 21st Centurymentioning

confidence: 99%

“…Benthic photosynthesis is also a source of dissolved oxygen that helps to mitigate internal loading of P, and it probably contributes to bulges in dissolved oxygen concentrations at depth in both ponds (Colman and Waldron 1998, Colman and Friesz 2001, ESS Group 2014-2017, Walker 2017. Eutrophication and associated clouding of the water column can inhibit benthic vegetation through shading and thereby lead to a self-amplifying cycle of increasing oxygen depletion, internal loading, and greater uptake of a lake's nutrient budget by phytoplankton (Wagner et al 2000, Arnold et al 2019. At Walden, benthic meadows represent far more biomass than the phytoplankton, meaning that a large reservoir of nutrients that is currently trapped on the bottom could become available to plankton if the macrophytes are lost due to shading Waldron 1998, Colman andFriesz 2001).…”

Section: Lakes Of Light In the 21st Centurymentioning

confidence: 99%