Coastal ecosystem modifications have contributed to the spread of introduced species through alterations of historic disturbance regimes and resource availability. and increased propagule pressure. Frequency of occurrence of the Manila clam (Venerupis phillipinarum. Veneridae) in Southern California estuaries has increased from absent or sparse to common since the mid-1990s. https://www.mariameetsanna.com/product-category/igora-vario-blonde/