featurewild files: sea turtles of batangas bay

situation
Luzon Island, Philippines

  • Chevron operates a fuel terminal in San Pascual, Batangas, situated at the southern tip of Luzon Island in the Philippines.
  • The terminal property includes three kilometers of coastline on Batangas Bay, the only beachfront in the waters of San Pascual.
  • Employees from the terminal have regularly helped remove marine debris from the beach area since 2007.
view the infographic

2012年1月，雪佛龙公司的工作人员观察到雌海龟上岸，并在码头的沙滩上筑巢。

They were identified as Olive Ridley turtles, a species listed as “vulnerable” on the International Union for Conservation of Nature (IUCN) Red List.

sea turtles play an important role in marine ecosystems as they:

help balance marine food webs as both predator and prey
serve as host and transport mechanism for other marine organisms
facilitate nutrient cycling between land and water

采取的行动

Olive Ridley sea turtles are found primarily in the tropical regions of the Atlantic, Pacific and Indian Oceans.

Provided protection and monitoring of nests and recording of hatchlings
Provided protection and monitoring of nests and recording of hatchlings

Involved the department of environment and natural resources (DENR)
Involved the department of environment and natural resources (DENR)

Expanded coastal cleanup efforts to include community members
Expanded coastal cleanup efforts to include community members

Olive Ridley turtles are named for the olive green hue of their top shell or carapace. The origin of the word “ridley” is unknown.

世界上最小的两只海龟之一

110

磅

(50 kg) maximum adult weight

1.5

in

(3.8 cm) typical hatchling length

30

in

(76 cm) maximum adult length

diet consists of:

crabs

虾

jellyfish

rock lobsters

sea urchins

蜗牛

软体动物

other aquatic invertebrates

They can also eat seaweed and algae, if necessary.

females are able to begin laying eggs
between 10 and 15 years of age.

return to the beach where they were born to lay their eggs
lay eggs 1-3 times per year in clutches of about 100
incubation period between 45-70 days depending on weather conditions

major threats include:

  1. 以卵和幼体为食的鸟类、哺乳动物和爬行动物
  2. Humans that harvest the eggs and capture adults for food
  3. Fishing and marine transport threats such as boat strikes and entrapment in fishing lines or nets
  4. Marine debris and pollution
  5. Loss of nesting habitat from beach erosion due to development, natural disaster and sea level rise

results

DENR指定巴坦加斯码头海岸线为橄榄色瑞德利海龟的筑巢地避难所。

DENR还设计了一个培训项目，帮助雪佛龙员工保护和照料筑巢地点和幼鸟。

Since 2016, employees and Chevron business and community partners have removed between 1.5 and 2.5 tons of marine debris yearly from the San Pascual coastline.

DENR还设计了一个培训项目，帮助雪佛龙员工保护和照料筑巢地点和幼鸟。

Since 2016, employees and Chevron business and community partners have removed between 1.5 and 2.5 tons of marine debris yearly from the San Pascual coastline.

2018年10月至2019年3月的筑巢期，共有6个筑巢点，比上年增长300%。

At one of these nesting sites, 77 hatchlings emerged from a clutch of about 100 eggs.

2018年10月至2019年3月的筑巢期，共有6个筑巢点，比上年增长300%。

At one of these nesting sites, 77 hatchlings emerged from a clutch of about 100 eggs.

view the infographicpdf格式opens in new window

our actions were consistent with our goal to
conserve biodiversity:
we strive to avoid or reduce the potential for significant impacts on sensitive species, habitats and ecosystems

see other wild files

Wild Files is a series on Chevron.com that spans the world to cover interesting examples of how we deliver on our环境管理承诺.

Published: July 2019