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1. Bittman, R. (2001) The California Natural Diversity Database: A Natural Heritage Program for Rare Species and Vegetation. Fremnotia, 29: 3-4 https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=116400&inline 2. California Department of Fish and Wildlife (2016) Instream Flow Program. https://www.
1. Booth, D. Singer, M. (2009) General Considerations for Watershed Health. Draft Watershed Health Metrics for Evaluating Restoration Progress in the San Geronimo Creek Watershed. Technical Memorandum. http://www.marinwatersheds.org/docs/final_SG_sep/B.%20Watershed%20Health.pdf 2. Berg, N.
Be on the look out for these tree pests and diseases! Invasive Shot Hole Borer (ISHB) Goldenspotted Oak Borer (GSOB) Foamy bark canker and Western Oak Bark Beetle (WOBB) Sweet gum leaf scorch (Xylella) Emerald Ash Borer (EAB) Laurel Wilt Asian Citrus Psyllid (ACP) and Huanglongbin (HLB) Quick refere...
The Invasive Shot Hole Borer (ISHB) is a term used for two related shot hole borer beetles, Polyphagous Shot Hole Borer (PSHB) and Kuroshio Shot Hole Borer (KSHB). These beetles (Euwallacea spp.
The goldspotted oak borer (Agrilus auroguttatus) is a flatheaded borer beetle that attacks oaks. It prefers read oak group, and mature trees, but has been found to attack other oaks and smaller trees.
The Western Oak Bark Beetle (WOBB) is a small (2mm long) beetle that spreads a fungus (Geosmithia pallida) when it bores into oak trees. Wet discoloration can be observed from the beetle entry holes, including foamy liquid down tree trunks.
A bacterium known as Xylella (species: Xyella fastidiosa) is spread by piercing and sucking insects such as leafhoppers and spittle bugs, but most commonly sharpshooters.
This small (0.39-0.51 inch, 10-13mm), metallic green boring beetle (Agrilus planipennis) serious damage to Ash trees. Beetle larvae develop under the bark as they feed on the tree. Initial attacks cause yellowing and thinning of foliage.
The redbay ambrosia beetle (Xyleborus glabratus) bore into trees of the laurel family, such as redbay, sassafras, pondspice, bay laurel, and avocado. These beetles spread a fungus (Raffaelea lauricola), causing Laurel Wilt.
The Asian citrus Psyllid (Diaphorina citri) is a piercing-sucking insect that feeds on new leaf growth of citrus plants and closely related plants of the Rutaceae family (such as box orange, Indian curry leaf, orange jasmine, calamondin). The feeding can caused twisted or notched leaves.