Geographical variability in the controls of giant kelp biomass dynamics

2015 ◽  
Vol 42 (10) ◽  
pp. 2010-2021 ◽  
Author(s):  
Tom W. Bell ◽  
Kyle C. Cavanaugh ◽  
Daniel C. Reed ◽  
David A. Siegel
Keyword(s):  
Giant Kelp ◽  
Geographical Variability ◽  
Biomass Dynamics ◽  
Kelp Biomass

scholarly journals Environmental controls of giant-kelp biomass in the Santa Barbara Channel, California

2011 ◽  
Vol 429 ◽  
pp. 1-17 ◽  
Author(s):  
KC Cavanaugh ◽  
DA Siegel ◽  
DC Reed ◽  
PE Dennison
Keyword(s):  
Giant Kelp ◽  
Santa Barbara Channel ◽  
Santa Barbara ◽  
Environmental Controls ◽  
Kelp Biomass

Biosorption characteristics of uranium(VI) and thorium(IV) ions from aqueous solution using CaCl2-modified Giant Kelp biomass

2015 ◽  
Vol 307 (1) ◽  
pp. 635-644 ◽  
Author(s):  
Limin Zhou ◽  
Yun Wang ◽  
Hongbin Zou ◽  
Xizhen Liang ◽  
Kai Zeng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Giant Kelp ◽  
Kelp Biomass

The importance of progressive senescence in the biomass dynamics of giant kelp (Macrocystis pyrifera)

Ecology ◽  
2013 ◽  
Vol 94 (8) ◽  
pp. 1848-1858 ◽  
Author(s):  
Gabriel E. Rodriguez ◽  
Andrew Rassweiler ◽  
Daniel C. Reed ◽  
Sally J. Holbrook
Keyword(s):  
Macrocystis Pyrifera ◽  
Giant Kelp ◽  
Biomass Dynamics

Mechanisms leading to recruitment inhibition of giant kelp Macrocystis pyrifera by an understory alga

2021 ◽  
Vol 657 ◽  
pp. 59-71
Author(s):  
BA Beckley ◽  
MS Edwards
Keyword(s):  
Field Experiments ◽  
Local Community ◽  
Kelp Forest ◽  
Macrocystis Pyrifera ◽  
Forest Recovery ◽  
Kelp Forests ◽  
Giant Kelp ◽  
Combined Effects ◽  
Life Stages ◽  
Survival And Growth

The forest-forming giant kelp Macrocystis pyrifera and the communities it supports have been decreasing across their native ranges in many parts of the world. The sudden removal of giant kelp canopies by storms increases space and light for the colonization by understory macroalgae, such as Desmarestia herbacea, which can inhibit M. pyrifera recovery and alter local community composition. Understanding the mechanisms by which algae such as D. herbacea interact with M. pyrifera can provide insight into patterns of kelp forest recovery following these disturbances and can aid in predicting future community structure. This study experimentally tested the independent and combined effects of two likely competitive mechanisms by which D. herbacea might inhibit recovery of M. pyrifera in the Point Loma kelp forest in San Diego, California (USA). Specifically, we conducted field experiments to study the individual and combined effects of shade and scour by D. herbacea on the survival of M. pyrifera microscopic life stages, and the recruitment, survival, and growth of its young sporophytes. Our results show that scour had the strongest negative effect on the survival of M. pyrifera microscopic life stages and recruitment, but shade and scour both adversely affected survival and growth of these sporophytes as they grew larger. Canopy-removing storms are increasing in frequency and intensity, and this change could facilitate the rise of understory species, like D. herbacea, which might alter community succession and recovery of kelp forests.

scholarly journals The Prevalence and Patterns of Palmaris Longus Muscle Absence in an Iranian Population

2019 ◽  
Vol 9 (4) ◽  
pp. 279-282
Author(s):  
Mehdi Forouzesh ◽  
Abdolrazagh Barzegar ◽  
Fardin Fallah
Keyword(s):  
Gender Difference ◽  
Clinical Importance ◽  
Tendon Graft ◽  
Iranian Population ◽  
Geographical Variability ◽  
Palmaris Longus ◽  
Longus Muscle ◽  
Palmaris Longus Muscle ◽  
And Gender ◽  
Gender Specific

Palmaris Longus (PL) is a muscle of the forearm, i.e., not functionally necessary and does not exist in all people. It is a choice for tendon graft and investigating its prevalence is of clinical importance. During April-October 2009, 102 cadavers (78 males, 24 females) were bilaterally necropsied for PL exploration in Zanjan City, Iran. PL Absence (PLA) was observed in 37 (36.3%) cases (28 males, 9 females). PLA prevalence was similar in men (36%) and women (37.5%). Of PLA cases, 19 (51%) were unilateral (14 males, 5 females), and 18 (49%) were bilateral (14 males, 4 females). In conclusion, PLA prevalence of 36.3% in our population was similar to other studies conducted in Iran. We found no gender difference in PLA prevalence and its patterns. Due to geographical variability in PLA rate, future regional and national studies with more magnificent sample sizes are recommended to determine the prevalence and gender-specific patterns of PLA.

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