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Humboldt Journal of Social Relations

Full issue of volume 35 of HJSR


Benefits Of Cover Cropping Systems In Walnut Orchards As Sustainable Agricultural Practice, Ana Medic, Consuelo B. Baez Vega Jan 2022

Benefits Of Cover Cropping Systems In Walnut Orchards As Sustainable Agricultural Practice, Ana Medic, Consuelo B. Baez Vega

CSU Journal of Sustainability and Climate Change

In recent years walnut orchards implemented cover crops in between rows to improve soil’s quality, lessen soil’s erosion, increase organic matter, manage nutrient movement and availability, enhance water retention, and expand microbe, insect, and flora diversity. Commonly selected cover crops in California are from families Poaceae, Brassicaceae, and Fabaceae. Considerations should be made when choosing a particular cover crop mixture to enhance multiple benefits and improve sustainable practices in orchard settings. An experiment was conducted in a walnut orchard to compare functionality and benefits of three systems multi-crop, monocrop, and no vegetation cover crop system. The following components were evaluated: …


Two Hemlocks, James P. Smith Jr Jan 2022

Two Hemlocks, James P. Smith Jr

Botanical Studies

No abstract provided.


Purposeful Use Of Poisonous Plants, James P. Smith Jr Jan 2022

Purposeful Use Of Poisonous Plants, James P. Smith Jr

Botanical Studies

No abstract provided.


Poisonous Plants: A Glossary Of Commonly Used Terms, James P. Smith Jr Jan 2022

Poisonous Plants: A Glossary Of Commonly Used Terms, James P. Smith Jr

Botanical Studies

No abstract provided.


Poisonous Plants Of Home And Garden, James P. Smith Jr Jan 2022

Poisonous Plants Of Home And Garden, James P. Smith Jr

Botanical Studies

No abstract provided.


Degradation And Nitrogen Cycling In The Context Of Biodiversity-Ecosystem Function Relationships In The Inquiline Bacterial Community Of Darlingtonia Californica, Megan Teigen Jan 2022

Degradation And Nitrogen Cycling In The Context Of Biodiversity-Ecosystem Function Relationships In The Inquiline Bacterial Community Of Darlingtonia Californica, Megan Teigen

Cal Poly Humboldt theses and projects

Biodiversity-ecosystem function (BEF) research aims to explain how species and their environments interact with each other. Microbial communities engage in vital biogeochemical pathways in a variety of natural ecosystems, and yet there are large knowledge gaps about the specific metabolic pathways in which they are involved. Degradation specifically contributes to nitrogen cycling globally through the breakdown of large organic nitrogen compounds into small inorganic nitrogen that is necessary for the survival of many other organisms. In this study, I focused on the degradative function of the inquiline microbial communities found within the carnivorous pitcher plant, Darlingtonia californica. Darlingtonia grows in …


Nikolai Ivanovich Vavilov, James P. Smith Jr Jan 2022

Nikolai Ivanovich Vavilov, James P. Smith Jr

Botanical Studies

No abstract provided.


Mechanically Injurious Plants, James P. Smith Jr Jan 2022

Mechanically Injurious Plants, James P. Smith Jr

Botanical Studies

No abstract provided.


Richard Evans Schultes, James P. Smith Jr Jan 2022

Richard Evans Schultes, James P. Smith Jr

Botanical Studies

No abstract provided.


Food Plants With Toxic Properties, James P. Smith Jr Jan 2022

Food Plants With Toxic Properties, James P. Smith Jr

Botanical Studies

No abstract provided.


An Annotated List Of The Poisonous And Injurious Vascular Plants Of The United States, James P. Smith Jr Jan 2022

An Annotated List Of The Poisonous And Injurious Vascular Plants Of The United States, James P. Smith Jr

Botanical Studies

No abstract provided.


Forecasting The Outcomes Of Managing A Rare Endemic Plant At Its Elevational Limit Under Climate Change Scenarios, Ethan Reibsome Jan 2022

Forecasting The Outcomes Of Managing A Rare Endemic Plant At Its Elevational Limit Under Climate Change Scenarios, Ethan Reibsome

Cal Poly Humboldt theses and projects

Lupinus constancei (Lassics lupine) is an exceptionally rare forb with a population that in 2020 consisted of 1,300 individuals located on two adjacent mountaintops in northwestern California, USA. Past work has demonstrated the species is threatened by high levels of seed predation by small mammals, which is likely the result of fire exclusion and the subsequent vegetation encroachment that both increases small mammal habitat and directly reduces suitable habitat for the species. Because of this, active management through caging of reproductive individuals to reduce seed consumption has been conducted every year since 2003. In addition, growing season temperatures have increased …