Rainfall as an Abiotic Factor at Race Rocks

Rainfall  at Race Rocks. Recorded by a Davis Instruments tipping bucket rain gauge. These graphs are made possible by the website victoriaweather.ca

Hourly Rainfall today at Race Rocks

 

 

Rainfall for the past week at Race Rocks

 

 

Rainfall for the past month

Rainfall for 2020 at Race Rocks

 

 

Rainfall graph for 2019

Rainfall graph for 2018

Rainfall graph for 2017

 

ARCHIVES
2016 Rainfall for 2016
NOTE MISSING DATA in 2016 due to equipment failure
2015: Monthly Totals are shown. ( Includes data and graphs at this site.) 2014: Monthly Totals are shown. ( Includes data and graphs at this site.) 2013: Monthly Totals are shown. ( Includes data and graphs at this site.) 2012: Monthly Totals are shown. ( Includes data and graphs at this site.) 2011: Monthly Totals are shown. ( Includes data and graphs at this site.) 2010: Monthly Totals are shown. ( Includes data and graphs at this site.) 2009: Monthly Totals are shown. ( Includes data and graphs at this site.) Note : Jan to July.. equip failure. 2008: Monthly Totals are shown. ( Includes data and graphs at this site.) equipment failure gives blank records for several days 2007: Monthly Totals are shown. ( Includes data and graphs at this site.) Equip failure February March and part of April of 2007 2006: Monthly Rain Totals (includes data and graphs for part of 2006:  

Extreme values since 2006

 

 

 

The Adaptations and Response of Organisms to the Abiotic factor of Rainfall

Canada geese are dependant on the availability of fresh water at Race Rocks. During the winter, the higher level rock pools are refreshed by rainfall. There is no other natural source of water on the island. By the time their eggs hatch in June, most of the pools have dried up, so they have to take their young off the island and over to the mainland. They may make it past the eagles….(Photo by PB)

Juvenile bald eagles in very wet weather.( Photo by Pam Birley)
The availability of water for vegetation on Race Rocks has major implications for the species of plants which can survive on the island. Not only do they have to survive dessication from salt spray, but abundant water in the winter months and almost a total lack of water from June to September. One of the best grasses to tolerate these conditions is Fescue. Here you can see it growing on the natural rock outcrops on the island. 


Go to this exercise on the Water Cycle , along with other biogeochemical cycles.

Other references:  Google Climate change and Rainfall patterns

Global warming already changing rainfall... 

Wetland Conservation – Threatened by Climate Change


Rainbow West of Great Race Rocks from the remote camera 5. Image by Garry Fletcher,

Recent Posts

A Dream Come True! (and an animal census)

Everyone has a favourite animal, maybe its a dog or a cat or maybe its something elusive that you have a slim chance of ever seeing like a platypus. For some people, especially those in the marine mammal field it goes even deeper than that. We have specific animals within a species that we hope to one day see. For me I have two:

CA216C1 Frosty – an all white killer whale that travels between California and BC

T063 Chainsaw – a transient killer whale who visits the Salish Sea for roughly 2 weeks every spring and is recognized by his large jagged dorsal fin

Don’t get me wrong, the list is longer than that…I’ve yet to see K or L pod (Southern Resident Killer Whales), and I wouldn’t be opposed to seeing a narwhal or a leopard seal somewhere in the world one day, but as far as specific animals go – Frosty and Chainsaw are the top of my list.

Around mid afternoon I heard some chatter over the radio and spotted a few slow moving ecotourism vessels on the outskirts of the reserve which usually means there are whales nearby. I grabbed my camera and ran outside to find the man, the myth, the legend…Chainsaw! I almost didn’t believe it at first but that dorsal is hard to miss! He was travelling with at least 4 other whales including a youngster.

Not only have I been fortunate enough to see killer whales twice since my arrival yesterday afternoon but also my bucket list whale! I think this means that this Race Rocks trip will be a pretty spectacular one, I can’t wait to see whats to come. At this rate I should set my sights high, maybe a blue whale?

Now that I’ve shared my celebrity encounter, on to the rest of the day!

Today was animal census day and I proved myself wrong (see yesterday’s blog post) by spotting more pigeon guillemots than I’ve ever seen before. I did not however, see any turnstones today. Ollie was hauled out on Middle Rocks this morning but I heard over the radio that he was possibly near Swordfish Island this afternoon. Last but not least, I spotted my first whimbrel and hope to see more!

 

Animal Census:

Elephant seals: 4 female
Steller sea lions: 14
Harbour seals: 68
California sea lions: 19
Sea otters: 1 (Ollie)
Killer whales: 5 (T65s and T63s)
Gulls: 264
Canadian geese: 7
Oyster catchers: 10
Pigeon guillemots: 106
Eagles: 3 (2 adults, 1 juvenile)
Cormorants: 17
Savannah sparrow: 3
Whimbrel: 1
Raven: 1

 

Thankfully we don’t count bivalves in the census!!

Vessel Census:

1 private
4 ecotourism – far less today!

Weather:

    • Sky: Blue and clear
    • Wind: High of 11 knots, Low of 5 knots
    • Sea: Calm
    • Temperature: Low 8oC, High  12oC

** All wildlife photos taken at the furthest distance possible, and may be cropped to improve detail! **

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